I don't believe it is either type of 1936 proof. It doesn't have the surface appearance, nor the details in the devices ( looks much weaker strike). Jim
Doug, I don't know if I have proofs or not but I will be taking them to a coin show to find out. I bought 6 encased nickels from an antique store around a month or two ago and when I got em' home I looked at my other nickels and they just were'nt as shiney or well defined as the 6 in the case. To make a long story short, I placed all 6 nickels in distilled water thinking that they had been polished or something. Nothing happened, these 6 nickels are shinier and more defined than any other nickels I've ever come across. The other 5 nickels aren't as nice as this one as they are worn but they still have higher detail and shine more than normal. thx
This definitely appears circulated and polished due to the unusual shiny surfaces with wear and scratches. It's doubtful that a true proof would have ever circulated due to the premium that would have been paid to obtain it. Therefore it should still be in perfect condition. If you put a high MS one next to this you would see the hair and the ribbon above the braid has been worn down. Also wear and scratches on the buffalos shoulder. I saw a couple similar to this at the last show and avoided them. Sorry. A lot of these exist though. You can pick up a nice MS66 for a hundred bucks. Maybe less.
The best way to learn in addition to being on here is to take them into coin shows and see what they have to tell you. I wouldn't get your hopes up too high, but there are some diamonds in the rough. Good luck.
Doesn't the buffalo proof have the same flat sharp rims/edge that ( for example) the 1963 Jefferson proof has ( I have one in hand) and it seems that would be one good indicator. The one in the OP seems to show rounding or chamfering of the edge. jim
It's common to find polished examples of any coin. When someone says a coin is polished, all it means is that somebody took the coin and polished it up with a rag trying to make it look better.
I assume you were thinking brilliant proof, here is one to compare by. I have a satin image to if you need one for comparison.