Hollowbody Fretless Bass

Here's quite an attactive looking hollowbody fretless bass on eBay. It's looks like it's seen some use and has a fair few knocks and dings but I think these add to its charm.

The seller doesn't know what brand the bass is and thinks it might be a Mosrite or Hohner from the 1960s. Well, fretless basses were virtually unheard of before Jaco Pastorius popularised them in the 1970s, so I think he's got the wrong decade there, and I also believe that this bass is a USA-made Bartell (a company allegedly set-up by ex-Rickenbacker employee Paul Barth) as I have found a very similar bass also for sale on eBay (pictured below).