From either a 1989 or a 1991 I forgot which one I pulled it off of, but I checked and it mates up to my 1989 tank properly, yet fits correctly on both 1991 and 1989 frames

To be certain you can ask for measurements and I can take them for you

95% sure came off the 1989

If you're serious make a reasonable offer and I'll most likely accept it

As you can see there's some blemishes but the seat foam feels firm and cushy there's a few scratches including one long one and two punctures three small punctures