The original Washburn A20V models usually came with the Washburn Wonderbar "blunder bar" their take on a Kahler like trem.
Other A20 models had the hardtail.
The one for sale doesn't quite look like it has the wonderbar. It may have been retro-fitted with the possible Kahler, is a prototype of some kind or is a reissue with a Kahler.
I had an original run early 80's white tuxedo version of this and sold it for around $450 17 years ago and looks like more current prices asked for are from $600 - 1200
obligatory wonderbar pic
![the washburn wonderbar | Rig-Talk the washburn wonderbar | Rig-Talk](https://www.photochopz.com/gallery/data/500/medium/Wonder2.jpg)