There are very few guitar company ads that include the 12-string bass.
A Waterstone Guitars ad that includes the Tom Petersson model 12-string bass.
Tom Petersson with the original Hamer Quad Bass after it had been painted black, 1979 to 1980.
Tom McKay of Joydrop and his Black Hamer CH-12 12-string bass is included in this ad.
1980’s Hamer ad.
The B12S 12-string bass is included.
Warrior has not made many 12-string basses but there is one hiding in the background of this ad from 1999.
A Warrior ad from 1998 shows the 12-string bass better.
Musicvox ad for the MI-5 12-string bass from 2014.
Bass Player ad, July, 2013 issue.
Musicvox ad featuring both the Space Cadet and MI-5 12-string basses.
SWR ad featuring Jeff Ament and his Hamer B12A “Ament” variant at Lollapalooza 1992.
SWR ad published in the UK which lists House Music as the exclusive SWR distributor for the UK.
Dean Rhapsody 8-string and 12-string bass ad.
Dean Rhapsody ad for a dealer in the UK.
Tom Petersson playing the Green Sparkle Chandler Royale 12-string basses live on stage. This photo dates to 2003.
Ad from the 2004 issue of Guitar & Bass Buyer’s Guide.
Les Fradkin’s ad from Reverbnation - he’s holding his 2021 Waterstone 12-string bass. This ad was spotted on the weather.com website.