Antique flow blue platter. Age estimate: 1800's. It is marked in green, but I cannot quite make out the mark: it looks like HR crown symbol, Yllie, but not sure, then has the word China and #10 in gold. This platter is 11.5 long x 8.75 wide. On display side it showing some age/wear as expected; some faint scratches, etc. On backside it has 2 small brown spots that are either old surface flakes or bubble pops. Overall it displays fine if on a wall or in a curio cabinet. 2/17