PAL Engineering rotary throttle carburetor question

Local flathead building guru Ron Tietge built the flathead for my dad's 36 Ford Cabriolet back in the mid 80s. Ron p***ed away last February and I was at his house today helping his daughter identify and price Ron's stash of Model A and flathead parts. On a shelf in the ba*****t we found this brand new PAL Engineering rotary throttle carburetor. Ron was given the NOS carb by Paul Lebeda (PAL Eng.) when he stopped building and selling them. I remember this carb being discussed on the HAMB back in 2019 so I found the old thread (link is below). My question is - what do you think this carb is worth? I want to put a fair price on it but I have no idea what that would be.

https://www.jalopyjournal.com/forum/threads/pal-carburetors-by-pal-engineering.1143029/

 

Put it in the cl***ifieds and say best offer.

What it sells for is the fair price.

 

Keep it for 50 years, then sell it to one of the grandkids of the inventor.

Jon