Bitossi-like #7563 and Italy signature - probably Fratelli Fanciullacci

This charming ashtray has a Bitossi style signature, but not a typical palette or form. Picture of bottom of the ashtray follows. Help! 1 3/4" high, 5 3/4" in diameter. The number on the bottom is 7563. There is an Aldo Londi Bitossi attributed ashtray- nothing like mine- on eBay right now

There is an ashtray attributed to Fratelli Fanciulacci marked 7563A and a very similar signature.

There is an ashtray marked 7563B on eBay

None of the ashtrays look at all alike. I am wondering if some company marked all their ashtrays 7563?

Thank You

Julie

If no one comes to the rescue and you want to do a bit more research. Walter (if he is still about) and the team over here http://italianpotterymarks.freeforums.org/index.php?sid=30210ae2415038b5645077fdaba28831
are rather good with this Italian stuff

Good luck