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 passed 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 basement 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 classifieds 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