Regal Bassoguitar circa 1937 must take the prize, even if it does look as if it was designed to be played upright like a traditional double bass. Note that it has a double bass style bridge and gut strings. Also in keeping with the double bass, the fingerboard is fretless, albeit with lined fret position markers.
It's quite a huge beast of an instrument and was apparently advertised in Regal's own catalogue as being "the biggest guitar in the world". However I suspect that the guy in the illustration opposite (possibly from the Regal catalogue?) is a boy or small adult, making the bass look all the bigger.
This example is currently listed on eBay with a Buy It Now price of US $3,999.
G L Wilson
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