This is an early "sandwich top" from its most famous exponent, Matthias Dammann. At this stage in its development, the tops were all-wood (no nomex) in materials. Buy it at GSI!
Classical Guitar International - Database : Matthias Dammann - Modern handmade Concert Classical Guitar - The History & Available Guitars for sale
Matthias Dammann 1992 Cedar Solidtop No. 52 64,5 cm Classical Guitar review
Matthias Dammann 1994 Double Top high end classical guitar with amazing sound
Matthias Dammann, Germany Double Top (Ex David Russell) Classical Guitar
Matthias Dammann, Germany Double Top (Ex David Russell) Classical Guitar
Matthias Dammann 1992 Cedar Solidtop No. 52 64,5 cm Classical Guitar review
1995 Matthias Damman Cedar CSA - Savage Classical Guitar
Matthias Dammann 2003
Matthias Dammann - Doubletop 1990 at SICCAS GUITARS - The world's finest guitars in one place
Matthias Dammann 1994 Double Top high end classical guitar with amazing sound
1990 Matthias Dammann SP/CSAR Guitar