I bought this seat locally in MA in the late 90s or early 2000s for track days in my ITR. It was used about 20 times.
I was looking to sell it back in 2016 and couldn't find the original papework. I emailed Kirkey with the numbers on the seat and they said "It is a 15” deluxe circle track seat. It is very similar to the 36 series on our website except it has double plating on the rib supports and back"
I don't see a 36 series on their site any longer, but it seems very similar to this: Kirkey, but perhaps with "double plating on the rib supports and back".
It sits on an Acura Integra seat mount, which obviously can be removed or sold or whatever.
Let me know if you're interested. A local pick up would be easiest (just outside of Boston MA).
Paul