Used Ponte Rialto boater. The size is 7 1/2 US, but due to the Bon-Ton Ivy sweatband it fits my 7 5/8 LO head with no problem. $70 plus actual shipping (max is $16.50). Sorry, but only offered to shipping addresses in the contiguous US.
A beautiful hat, Brent. Not a style I have worn before, but people sure look dapper in summer suits with a slick boater like this one. Straw hat day is coming soon!