Mine is low 6000's, i bought it new in 76 from Ernie Greenburg in Alexandra guns. Went in to buy a Mercury & he said "You dont want to buy one of those what about this one!". All thought of the Mercury flew out the window.
I got it for £60 with a case & tin of pellets thrown in.
He had aquired a job lot of them, wish i had grabbed the lot, would have been a nice little tickle!