Zip the Monkey!

Ok - I have to share this one.  I stopped at a garage sale down the road from my house.  I walked in this Lodge building where it was and there I found this monkey.  I quickly picked him up and thought he was the cutest thing ever.  On his shirt was the name ZIP.  My husband and kids were with me and I said to them at that point that I was buying him and wondered what timeframe this toy was from?  I was born in '78.  I went home and found my ZIP all over the internet as a collector item!  How cool!!  Here is my ZIP.  I would love to find out exactly how old he is...I wonder.  I'm thinking he's the 50s or 60s make because he doesn't have a banana.  Isn't he the cutest??!!!