Hmmmm.... If they are for a Windsor then they are likely 1.6 or 1.7.
I don't think I've ever had to look at one and judge. hehe... I just ordered what I needed. Maybe some of these other guys can tell a difference:
[USERGROUP=77]@SN Certified Technician[/USERGROUP]
I heard back from crane yesterday. They are a 1.6 ratio rocker from january of 1973. For being that old they are in great shape! I think they sat in a motor not running for a long time.