While I wish it had a solid top, The Official Vintage Guitar Guide indicates (pg 207) the GCS (Grand Concert Series) 6 has a laminated spruce top with mahogany back and sides.I know for sure that mine has mahogany back and sides, and Martin Company folks indicated the top was (likely) laminated...though the one sited in the OVGG was a 1994 and I bought mine in 75. Hey, it's still a nice little guitar.