

International Harvester Tractor Emblem with two holes. Age?
I bought this today at an estate sale. The man of the house collected tractors and related stuff. This was in his garage. It's about 4 1/8" tall.
I'm hoping someone can tell me what decade (or year) it comes from.
I can't find another one online to compare it to. On the back there is tiny lettering stamped into the sides where the metal is stamped into a curve. One stamp says, Utica, NY. And another one looks like 1035S, but the "S" is partially stamped and all of the stamps are very tiny.
Can anyone tell me its approximate age? The whole piece is relatively flat, doesn't curve at the top.
I also bought this "Killefer" emblem. I don't know anything about where it came from, but It looks neat.