If it's convenience, consider a UK dealer, but if it;'s money you want
then ebay every time, and as Keith says plenty of photos. this 12.1 is
worth serious money.

when you have put it on ebay, put a note on the Leak list
By doing this you'll contact the Asian
collectors who go mad for these things. You should really be selling
this to Hong Kong to get the right price, so list it worldwide on ebay
with a fair leadup period like 10 days. Be sure you have Leak and 12.1
in the header. Do a search on ebay worldwide for already sold 12.1s to
get an idea of price (sorry - just did, none there).

Definitely tell the Leak group, or you'll lose money.