EDIT: Thanks to Jon K of Random Acts of Geekery (I knew I could count on Jon for the answer!) I now know this is the Palmer Plastics Company King Kong from their Unbreakable Movie Monsters pack released in the mid 1960s, and that he also originally came with a tiny Fay Wray (wish he still had her.)
He is a couple inches tall, and is cast in solid blue plastic.
He also looks like he's hailing a cab.
I found him at the swap meet, and I got him for free the same day (and from the same vendor) I got my little blue Zonkers alien.
He's a little rough, and if I had to guess I'd figure he's older than the Zonkers guy who came out in the eighties.
"Hello my baby, hello my honey, hello my ragtime gal!"
