I have a 1920 Cuba 1 centavo that looks to me to be VF. I tried to list it on eBay, but my listing couldn’t be put up due to regulations. What I was wondering was whether these, especially pre-Castro coins, were legal to sell. I didn’t get the coin from Cuba; it just was found in a bunch of world coins. If it is legal, if you’re interested in buying it, I’d gladly sell it to you.

I'm not aware of it being illegal to buy and sell cuban coins. You can even find North Korean notes everywhere. It may just have been how you listed it.

Yeah, I've got some of that series, 1915-1961.  They are nice coins but not worth a lot to the general public.  Might be easier to trade or take to a coin show and see someone who specializes in that type of coin.  Either way, good luck.