Corbin Seat for 1100

I recently bought a Corbin seat in the hope of it fitting my T3 but it is too good to chop up and modify so now for sale. 
It's off an 1100 EV I think. It has some markings on the bottom. See photos. 
it's not perfect there is a bit of cracking in the leather but still too good for me to chop up. Open to offers. 
would prefer not to post as it is very heavy.

Id be very happy to swap for a good condition T3 California seat too.  

The seat is in Derbyshire.