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This came from a SIM card.

Die

M1402-A1 SIEMENS 1998

Sample 1 (red), mask revs: A1 C1 D1 F4 L3 M3 E2

siliconpr0n.org_map_siemens_m1402-a1_single_siemens_m1402-a1_infosecdj_mz_nikon20x.thumb.jpg

mz_nikon20x

Sample 2 (neutral), mask revs: A1 C1 D1 F3 L2 M2 E2

siliconpr0n.org_map_siemens_m1402-a1_single_siemens_m1402-a1_infosecdj_mz_nikon20x_2.thumb.jpg

mz_nikon20x_2