I had a 1968 850 Spyder. I think this a 1967 model. The '68 had little side marker lights on the front and rear fenders that were not on the '67 and since I don't see the lights here, I conclude '67. If you could see the front it would be easy, the '67 had cool aerodynamic covers over the head lights, whereas the '68 had exposed vertical plain head lights. The side markers and the exposed head light was due to NHTSA regs that went into effect for 1968 and later models.