Bsf - Bavarian Air-rifles

[I. J.]

My father-in-law has an BSF S60. SN if I read it correctly, is 9314
There's no frontsight hood, rear sight ís adjustable. No scoperail.
Standard slotted stock, no chequering, hard plastic buttplate.
Anyone knows what year it's from?
And where to get parts from? (barrel-lockup and breechseal)

If the back sight has windage facilities its after 1978.

For a breech seal. I did try a genuine BSF leather one but found more success with a 'O' ring packed with a part one due to the sloping breech.

HTH
Ian