Pill Identification by Imprints: ATN 50 Home Pill Identification by Imprints: ATN 50 2 results ATENOLOL 50 MG TABLET Side 1: ATN 50 Color: White Side 2: Shape: Round ATENOLOL 50 MG TABLET Side 1: ATN 50 Color: White Side 2: Shape: Round Other Popular Drug Imprint NC 300 037 P 20 ML 42 R332 VANDA 20 MG L421 Nitro-Dur 0.1 mg/hr 271/100 100 or 300 2984 PAD 0180 GG 58 R 128 CL49 462 V356 Z 4236 54 753 FENTANYL 600 44 218 G 241 YS 02 M 27 E73 G 1540 C162 WATSON 408 E 771 PLIVA 471 75mg G264 S 571 Tandem Plus I33 1 2 1311 N 135 T/255 52H 52H