AbraSilver Intercepts 274 Metres Grading 0.60 g/t Gold from 251 Metres Depth at Oculto East, Highlighting Potential for an Underlying Porphyry SystemThe intercept includes a high-grade interval of 23 metres grading 2.83 g/t goldToronto, Ontario--(Newsfile Corp. - December 10, 2025) - AbraSilver Resource Corp. (TSX: ABRA) (OTCQX: ABBRF) ("AbraSilver" or the "Company") is pleased to announce new assay results from three drill holes from the ongoing Phase V exploration program at its wholly-owned Diablillos project in Argentina (the "Project"). DDH 25-085 at Oculto East intersected a broad 274.0 metre ("m") interval grading 0.60 g/t gold including a higher-grade 23.0m grading 2.83 g/t gold, together with copper and molybdenum mineralization at depth. This intercept reinforces the scale, strength, and multi-phase nature of the Diablillos mineralizing system. Drilling continues to extend oxide-hosted gold mineralization well beyond the current conceptual open pit and provides further support for a significant porphyry system underlying Oculto.Highlight Drill Results - Widths are reported as drilled; true widths are not yet known.Oculto East: DDH 25-085 is the deepest drill hole completed to date at Oculto. The hole successfully tested a major structural-intrusive corridor extending beneath Oculto East, intersecting pervasive silicification, brecciation, and advanced argillic-silicic alteration interpreted to be related to a larger intrusive at depth. These features are consistent with the upper levels of well-developed porphyry systems. Results include: 274.0 m grading 0.60 g/t gold (from 251 m), including: 23.0 m grading 2.83 g/t gold (from 306 m);The hole also intersected significant copper and molybdenum values in multiple deeper sulphide zones, an important vector toward a porphyry center.DDH 25-083 encountered additional gold mineralization in a transitional oxide-sulphide zone, along the broad Oculto East structural corridor:26.0 m grading 0.74 g/t gold (from 203 m);DDH 25-082 tested the extension of the Oculto East structural corridor and returned:12.0 m grading 0.44 g/t gold (from 275 m).John Miniotis, President and CEO, commented, "Hole DDH 25-085 marks an important milestone and underscores the remarkable scale of the Diablillos system. The wide 274-metre gold interval, coupled with copper and molybdenum intercepts at depth, indicates strong potential well beyond the limits of our current oxide Mineral Resources. These results reinforce our view that Oculto forms part of a much larger precious- and base-metal system with substantial additional growth potential."Dave O'Connor, Chief Geologist, commented, "DDH 25-085 demonstrates mineralization to more than one kilometre depth and provides clear geological evidence of a vertically extensive system. The deeper copper-molybdenum-gold mineralization is characteristic of fertile porphyry environments, and the alteration we encountered is consistent with the upper portions of a significant intrusive center. These results enhance our geological model and highlight substantial additional exploration potential across the property."Table 1 - Summary of Key Drill Intercepts: Oculto EastIntercepts greater than 25 gram-metres gold shown in bolded text:Drill HoleArea From(m)To(m)TypeInterval (m)Agg/tAu g/tCu %MoppmDDH-25-082Oculto East275.0287.0Oxides12.01.10.44--303.0305.0Oxides2.03.40.38--DDH-25-083Oculto East172.0177.0Oxides5.055.20.48--203.0229.0Transition26.014.10.740.18-DDH-25-085Oculto East251.0525.0Transition274.02.50.600.0619Including306.0329.0Transition23.09.22.83--552.0572.0Sulphides20.0-0.160.18101883.0891.0Sulphides8.0-0.53-881,007.01,011.0Sulphides4.0-0.50-157 Note: All results in this news release are rounded. Assays are uncut & undiluted. Widths are drilled widths, not true widths. True widths are unknown.Figure 1 - Plan View of Drill Results To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/11792/277490_c9e8f654f47b981d_001full.jpgAdditional Details on Drill Results - Oculto East Drilling at Oculto East continues to confirm a broad, cohesive mineralized corridor extending beyond the eastern limit of the current Mineral Resource open pit shell. The high-grade interval in DDH 25-085 (23 m at 2.83 g/t Au) lies on the same structural trend as hole DDH 25-024, which previously returned 31.0 m grading 9.96 g/t gold and 16.2 g/t silver, highlighting the strong continuity of high-grade gold mineralization at Oculto East.Figure 2 - Section Through Latest Drill Holes at Oculto East To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/11792/277490_c9e8f654f47b981d_002full.jpgNote: Widths are drilled widths, not true widths. True widths are unknown. Figure 3 below is the standard model of alteration related to a porphyry intrusive system as presented by Dr. Richard Sillitoe1. Hole DDH 25-085 terminated in chlorite-sericite alteration, which indicates that the potentially hig