Magazine ads showing Hamer 12-string basses.
1980’s Hamer ad.
The B12S 12-string bass is included.
Tom Petersson with the original Hamer Quad Bass after it had been painted black, 1979 to 1980.
SWR ad featuring Jeff Ament and his Hamer B12A “Ament” variant at Lollapalooza 1992.