16ga, marked Springfield, J. Stevens Arms Company, Chicopee Falls, Mass USA and stamped 5100 on other side. Barrels are stamped Selected Forged Steel and Proof Tested 16ga, 2-3/4" chamber...
20ga, marked Ranger 101.6 and stamped 5100 on other side; same barrel stampings...
.410 actually marked STEVENS with the bird dog, J. Stevens Arms Co. etc. and 5100 on other side, same barrel stampings (3" chambers)...
Daryl I've seen that awesome Stevens several times before and always loved it; is it yours?