They are stamped on the edges of each side,mine is a 800.
looking at my picture you will see "insert yellow end here" right after that you will see # 800 stamped in it. you have to really look to see it. I hope this helps you.
stamped model number


Tim


1951 3100 Chevrolet
1951 Chevrolet Suburban Carryall
Image
"A house is built with boards and beams. A home is built with love and dreams."
"Look deep before you leap !!!" / "Everything is Everything"
"If I say a mouse can pull a house, hitch him up"