Jeez.... I know that Stradivarious used only the finest Itallion plywood but $4000 seems a bit steep. The seller was particularly helpful in his comments:
"Some call these bass fiddles, fiddle, violin, viola, cello, cellos, violins, violas, basses, accoustic, etc..
They have been used in orchestras, jazz bands, bluegrass, blue grass, slap rockabilly, country, etc... " LOL
Thanks for the link Bob. Did they make Swingmasters in 1919?

Hope no one gets taken in by this nonsense.