Endeavour Silver Continues to Intersect High-Grade Silver-Gold Mineralization at the Bolañitos Operation

Endeavour Silver Continues to Intersect High-Grade Silver-Gold Mineralization

at the Bolañitos Operation

VANCOUVER, British Columbia, Nov. 27, 2023 -- Endeavour Silver Corp. (TSX: EDR, NYSE: EXK) is pleased to report

positive drill results from its exploration program at the Bolañitos Mine in Guanajuato State, Mexico. The 2023 program mainly

focused on two areas, drilling the El Puertecito and Fortuna veins. At both areas, surface drilling intersected high-grade gold

and silver mineralization near historic workings and provide opportunities to increase resources, replace reserves and extend

mine life.

Dan Dickson, CEO, commented, “Our track record of exploration success has sustained operations at Bolañitos for over 16

years. Ongoing exploration results demonstrate our commitment to targeted and cost-effective brownfields exploration, which

has been successfully extending mine life in this historically rich district. We continue to make progress year over year in

understanding the regional mineralization system and remaining prospectivity at Bolañitos.”         

Highlight Drill Results from El Puertecito Vein Structure

• 8.78 gpt Au and 86 gpt Ag for 788 gpt AgEq over a 2.09 m ETW , including 25.7 gpt Au and 59 gpt Ag for 2,115 gpt

AgEq over 0.57 m in hole GOL-11

• 4.44 gpt gold and 94 gpt silver for 449 gpt AgEq over a 2.07 m ETW , including 11.35 gpt Au and 258 gpt Ag for

1,166 gpt AgEq over 0.56 m in hole GOL-09

Highlight Drill Results from Fortuna Vein Structure

• 4.01 gpt Au and 135 gpt Ag for 456 gpt AgEq over a 1.18 m ETW , including 8.04 gpt Au and 280 gpt Ag for 923 gpt

AgEq over 0.56 m in hole GOL-42

Abbreviations include: gpt: grams per tonne; Au: gold; Ag: silver; ETW: estimated true width; m: metre; HW: hanging wall.

Silver equivalents are calculated at a ratio of 80:1 silver:gold.

Drilling Context

At El Puertecito, since the beginning of the year, 32 new holes were completed totalling 5,833 metres. El Puertecito is a new

area south of Bolañitos, situated 300 metres northeast from Endeavour Silver’s historic Golondrinas Mine. Due its proximity to

existing infrastructure, minimal development would be required to incorporate El Puertecito into a mine plan. New high-grade

vein mineralization has now been delineated over 400 metres in length to a depth of 120 metres.   The structure remains open

at depth and to the southeast.

At Fortuna, 13 holes were completed totalling 2,922 metres. Fortuna is located south of Bolañitos situated 200 metres from

current accesses to the Lana vein of Endeavour Silver’s Lucero mine. Two structures have been delineated to define a

mineralized zone of 250 metres in length and 100 metres to depth, open to the southeast.

Latest Drill Results

The Bolañitos drill results are summarized in the following tables:

El Puertecito Vein:

Hole Structure From To True Width Au Ag AgEq

(m) (m) (m) (gpt) (gpt) (gpt)

GOL-08

Hw El Puertecito 60.40 62.30 1.46 6.86 342 891

Including 60.40 61.20 0.61 10.60 521 1369

El Puertecito 77.25 80.15 2.12 1.62 8 138

Including 77.25 77.85 0.44 3.22 6 264

GOL-09 El Puertecito 88.75 92.60 2.07 4.44 94 449

Including 91.55 92.60 0.56 11.35 258 1166

GOL-10 El Puertecito 113.85 115.45 0.97 5.36 35 464

Including 115.00 115.45 0.27 14.40 50 1202

GOL-11 El Puertecito 113.65 117.30 2.09 8.78 86 788

Including 114.75 115.75 0.57 25.70 59 2115

GOL-15 El Puertecito 153.20 154.95 1.22 19.96 91 1688

Including 153.80 154.35 0.38 51.60 249 4377

GOL-17 El Puertecito 139.55 140.90 1.24 2.18 18 192

GOL-20 El Puertecito 160.15 161.40 1.09 102.42 1149 9342

Including 160.45 161.15 0.61 181.00 2020 16500

GOL-23 El Puertecito 160.60 162.05 1.10 2.81 355 580

Including 161.15 161.65 0.38 7.78 1015 1637

GOL-25 El Puertecito 188.05 189.60 1.17 2.09 7 174

GOL-27 El Puertecito 122.00 123.20 1.08 0.88 92 162

Including 122.00 122.60 0.54 0.79 172 235

GOL-28 El Puertecito 139.70 140.85 0.91 3.20 102 359

Including 139.70 140.40 0.56 5.18 165 579

GOL-30 El Puertecito 162.95 164.90 1.46 5.86 174 643

Including 162.95 163.40 0.34 12.50 572 1572

GOL-31

El Puertecito 105.85 106.70 0.82 0.85 320 388

Fw El Puertecito 114.15 115.60 1.40 1.66 203 336

Including 115.05 115.60 0.53 3.83 480 786

GOL-34 El Puertecito 171.55 173.95 1.18 0.49 91 130

GOL-35 El Puertecito 95.30 96.70 1.38 1.06 232 317

Including 96.30 96.70 0.39 3.21 774 1031

GOL-36 El Puertecito 87.45 91.60 3.92 2.17 101 275

GOL-37 El Puertecito 108.15 109.45 1.17 3.22 120 378

Including 108.65 109.15 0.45 4.83 118 504

Note: Drill holes GOL-04, GOL-05, GOL-12, GOL-13, GOL-14, GOL-16, GOL-18, GOL-19, GOL-21, GOL-22, GOL-24, GOL-26,

GOL-29, GOL-32, GOL-33, GOL-43 and GOL-44 returned no significant results

Fortuna Vein:

Hole Structure From To True Width Au Ag AgEq

(m) (m) (m) (gpt) (gpt) (gpt)

GOL-39

Fortuna 168.80 170.10 0.98 3.11 73 322

Including 168.80 169.60 0.60 4.99 118 517

Fw Fortuna 198.55 199.90 1.21 1.23 108 206

Including 198.55 199.10 0.49 2.41 255 448

GOL-40 Hw Fortuna 158.30 159.40 0.96 1.13 43 133

Including 158.30 158.70 0.35 1.95 49 205

GOL-41 Hw Fortuna 149.95 151.25 1.18 1.11 78 167

Including 150.30 150.75 0.41 1.78 207 349

GOL-42 Fortuna 179.90 181.60 1.18 4.01 135 456

Including 180.40 181.20 0.56 8.04 280 923

GOL-45 Hw Fortuna Norte 74.00 75.50 1.00 7.02 31 592

Including 74.50 75.00 0.33 20.60 92 1740

GOL-46

Hw Fortuna Norte 91.70 93.80 1.16 7.63 57 667

Including 92.20 92.80 0.33 26.40 197 2309

Hw Fortuna 165.65 167.50 1.36 0.54 60 103

Including 166.15 166.70 0.41 1.54 115 238

GOL-47 Fortuna 142.90 144.25 1.00 0.69 67 121

Including 142.90 143.30 0.29 1.41 68 181

GOL-48 Fortuna 94.85 96.15 0.92 4.32 125 470

Including 94.85 95.40 0.39 6.33 161 667

GOL-49

Hw Fortuna 99.45 100.45 0.86 3.08 26 272

Including 99.45 99.95 0.43 5.91 45 518

Fortuna 146.50 148.30 1.16 1.45 96 212

Including 147.45 147.80 0.22 4.59 92 459

Fw Fortuna 191.80 193.15 0.94 8.56 70 755

Including 192.65 193.15 0.35 13.90 42 1154

GOL-50 Hw Fortuna 94.45 95.45 0.94 1.15 48 140

Including 94.95 95.45 0.47 2.28 94 276

GOL-52 Hw Fortuna 111.25 112.85 1.36 2.78 135 357

Including 111.70 112.40 0.59 4.57 232 598

GOL-53

Hw Fortuna Norte 73.45 75.55 1.35 2.68 10 225

Including 73.45 73.70 0.16 21.80 81 1825

Hw Fortuna 140.90 142.60 1.19 4.22 165 502

Including 141.50 142.10 0.42 6.90 362 914

Note: Drill hole GOL-51 returned no significant results

Silver equivalents are calculated at a ratio of 80:1 silver:gold. All widths are estimated true widths.

Qualified Person and QA/QC - Dale Mah, P.Geo., Vice President Corporate Development of Endeavour Silver, is the

Qualified Person who reviewed and approved the technical information contained in this news release. A quality control

sampling program of reference standards, blanks and duplicates has been instituted to monitor the integrity of all assay

results. All samples are split at the local field office and shipped to SGS Labs, where they are dried, crushed, split and 250

gram pulp samples are prepared for analysis. Gold is determined by fire assay with an atomic absorption finish and silver by

aqua regia digestion with ICP finish, over-limits by fire assay and gravimetric finish.

About Endeavour Silver – Endeavour is a mid-tier precious metals mining company that operates two high-grade

underground silver-gold mines in Mexico. Endeavour is advancing construction of the Terronera Project and exploring its

portfolio of exploration projects in Mexico, Chile and the United States to achieve its goal of becoming a premier senior silver

producer.  Our philosophy of corporate social integrity creates value for all stakeholders.

Contact Information

Galina Meleger, Vice President, Investor Relations

Toll free: (877) 685-9775

Tel: (604) 640-4804

Email: [email protected]

Website: www.edrsilver.com

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Cautionary Note Regarding Forward-Looking Statements

This news release contains “forward-looking statements” within the meaning of the United States private securities litigation

reform act of 1995 and “forward-looking information” within the meaning of applicable Canadian securities legislation. Such

forward-looking statements and information herein include but are not limited to statements regarding Endeavour’s anticipated

performance in 2023, estimates of mineral assay results, contributions to resource growth and future production, changes in

mining operations and forecasts of production levels, anticipated production costs and all-in sustaining costs and the timing

and results of various activities. The Company does not intend to and does not assume any obligation to update such forward-

looking statements or information, other than as required by applicable law.

Forward-looking statements or information involve known and unknown risks, uncertainties and other factors that may cause

the actual results, level of activity, production levels, performance or achievements of Endeavour and its operations to be

materially different from those expressed or implied by such statements. Such factors include but are not limited to the

reliability of mineral assay estimates, changes in production and costs guidance; the ongoing effects of inflation and supply

chain issues on mine economics; national and local governments, legislation, taxation, controls, regulations and political or

economic developments in Canada and Mexico; financial risks due to precious metals prices; operating or technical

difficulties in mineral exploration, development and mining activities; risks and hazards of mineral exploration, development

and mining; the speculative nature of mineral exploration and development; risks in obtaining necessary licenses and permits;

and challenges to the Company’s title to properties; as well as those factors described in the section “risk factors” contained

in the Company’s most recent form 40F/Annual Information Form filed with the S.E.C. and Canadian securities regulatory

authorities.

Forward-looking statements are based on assumptions management believes to be reasonable, including but not limited to:

the continued operation of the Company’s mining operations, no material adverse change in the market price of commodities,

forecasted mine economics as of 2023, mining operations will operate and the mining products will be completed in

accordance with management’s expectations and achieve their stated production outcomes, and such other assumptions and

factors as set out herein. Although the Company has attempted to identify important factors that could cause actual results to

differ materially from those contained in forward-looking statements or information, there may be other factors that cause

results to be materially different from those anticipated, described, estimated, assessed or intended. There can be no

assurance that any forward-looking statements or information will prove to be accurate as actual results and future events

could differ materially from those anticipated in such statements or information. Accordingly, readers should not place undue

reliance on forward-looking statements or information.