Hi all,
a friend of mine is offering me for sale an early gearbox that was parted out and sold to him years ago. We are not sure whether it is a 4 or 5 speed gearbox. The numbers that appear on the casing are:
Top: 901.301.301.OR
Bottom: 902 / 1 3280227

Would somebody please help me identifying its year of manufacture and number of speeds?

Assuming it is a 5 speed, the shift pattern would be like this?
R 2 4
1 3 5

Finally I would appreciate comments on its market value assuming it is not refurbished but in good condition.

Thanks in advance for your help,
Rafael