STERLINGWORTH - 12, 16, or 20 ga., 26, 28, or 30 in. barrels, various chokes, boxlock, extractors, double trigger, checkered pistol grip stock. Mfg. 1905-30. Grading 100% 98% 95% 90% 80% 70% 60% 50% 40% N/A $1,475 $1,250 $975 $875 $750 $575 $500 $450 $395 30% 20%$350 $300 Add 33% for auto ejectors. Add 50% for 20 ga. Add 20% for 16 ga. Add 25% for single trigger. Ser. no. range on 12 ga. Sterlingworths is 50,000-161,556, 16 ga. is 300,000-378,481, and 20 ga. is 250,000-271,304.