Hmm... I always assumed my Greco was something other than genuine mahogany.... Anybody know what they would have used?
Possibly the same stuff as used in my '89 Orville by Gibson. I'm pretty sure it was Honduras, the body was made of 5 strips that were joined very well..
I also have an early MIJ Yairi acoustic guitar that is definitely Honduras. All of it except the ebony bridge and fretboard.
EDIT: The top and braces are spruce, neck, sides and back are Honduras.