FFG always has a lot of tokens in their games and after games these tokens either land in someone else his token bag or just get lost. Also in a game its just an extra thing lying around.
So, I used transfers for my ship numbers.
You just need some transfers with numbers or symbols, some GW ard' coat (or simmilar) and a can of hobby varnish.
First put some ard coat on the place were you want your transfer, then add the transfer and then add a small layer of ard' coat again.
Wait until it is dry then spray with varnish, now after it dries it will look like your number on the card was always there. In addition, it also saves you the trouble of all those extra ship tokens.
(Only number 2 prototype has been sprayed with varnish)
Edited by PS10