I just reviewed the "restricted" list and saw that no item from Cuba - regardless of date - can be sold on
ebay. Last year I picked up an interesting box lot of albums that included 2 volumes of Cuba, and 2 volumes of North Korea - also on the restricted list. There are currently stamps on
ebay from Cuba, primarily US occupation issues, but some modern as well. I am assuming they fly under the radar until reported or caught by some review. Have you looked into the other sites such as bidstart?