Winchester Model 37 Single Shot Shotgun Collection. Collection consist of 1-410 Ga. Red Letter Model (pre 1945), 1-20 Ga. (post 1945), and 1-16 Ga. (post 1945). All are in good condition being almost 80 years old. I have shot them and they function well. Picture #1 is all three together, Pictures 2,3,4 are of the 410 Ga., Pictures 5,6 are the 20 Ga., and Pictures 7,8 are the 16 Ga. They are all from the PRE-SERIAL number era, no serial numbers.