Hi!
I'm from Brazil and I have a bunch of those! I've heard they were given as "gifts" with coca cola bottles in the sixties or seventies, but my mom said she bought me a bag of those in a shop when I was a kid. They were always plain coloured, but available in many colours. I still have a blue Bambi from my childhood, but I found a hand coloured set a few years ago in a thrift shop. I love bizarre vintage toys
Here is a pic of somo of it I've uploaded at instagram.
Hope I helped!