Read an article in the local paper about this auction. It's mainly Corvettes but there are a few Buicks as well. There are a bunch of 63 split window vettes. https://bid.joerpyleauctions.com/ui/auctions/107719
The 72 350 4-sp convertible was talked about in here (2 other threads linked w/in this one): https://www.v8buick.com/index.php?threads/1972-gs350-convertible-green-4-speed-35k-in-de.388932/
Only three small Buicks come up when I search the auction website for Buick. Funny that two are listed as Grand Sport and one as a Gran Sport Click screenshot to view those cars
It's a nice looking car with a dynamite color combo. Convertible too. I am not sure about the salvage title, but that would be a deal breaker for me in Washington state as you cannot get comprehensive insurance on a car with such a title. Maybe someone knows how to "wash" the title. I bet so.
That Saturn White survivor GSX with 20k miles sold for $112,500 https://www.raleighclassic.com/vehicles/2237/1970-buick-gsx