Vivitar 24mm F2.8

The actual list of manufactures is at:
http://www.cameraquest.com/VivLensManuf.htm

This covers up to 1990, because that SN doesn't seem to fit in with that list, the lens was probably made after 1990 and should be a more up to date computer design.

The manufacturer could be any of the ones listed, unlikely Vivitar would use anyone else.

I think if I was buying a 24mm I would go for one of around this age rather than one from 20 years earlier.

shim

Thanks Shim.
I think I have sold this lens - just waiting for confirmation from purchaser.
Regards
Donut