The Corbin seat is off my ex 1993 ST1100 in very good condition.
https://www.corbin.com/honda/9196st1100.shtml(no red piping , all black, no back rest supplied)
Still has original Corbin Manufacturers stickers on base.
$200.00 or offers
pick-up (postage would be expensive due to weight and size)
PM me with your mobile number and I will send you seat photo's.
OZSTOC members first.
Cheers
Stay safe and take care.
"Lest we Forget"