eBay
Vicana Sugar Company aka Compania Azucarera Vicana stock certificates (10 certs into total representing 1000 shares each, 10 certs representing 100 shares)--will sell in block trade or individual certs). Shares first floated in 1945. Company then taken by Castro regime in 1959. Certificates are in superb condition and have been stored in bank safe deposit box. Could be a collectible or a viable claim (if President Donald Trump gets an itch to make this a topic of negotiation with Government of Cuba)