Breedlove Rainforest S African Mahogany Concert Acoustic-Electric Guitar. It is in good condition with keys and everything. From mid-1998 on, the serial numbers for guitars and basses began with “CLF”. Looks too small to be for a D size guitar. BUSCARINO SERIAL NUMBERS Luthier John Buscarino had the priviledge of apprenticing with not Bass Guitars: Your Breedlove guitar or mandolin is factory-equipped with D’addario EXP170 light gauge bass strings. Breedlove mandolin serial numbers, “19XX”) the gui- tar was built.