Sorry so long to reply to this, been swamped with work and travel, but I did manage to find somebody with the old books that cover this model (410 or older reference to the 41 series).
Looks like it will fit a T19 or a ZF5, you could double check with the pitch and pressure angles off the transmission you want to hang this on as that will tell you what input gear you need.
Here's one other thing I will tell you: as long as you can find the input and ratio gears you need for your application, you should be ok, but keep in mind that the 410 was obsoleted more than 20 years ago. This is a design where the input gear is moved back and forth on the drive gear in the transmission. The newer designs utilize a fixed transmission drive/PTO input gear, which you set clearance/lash on, and then the ratio gear within the PTO is engaged/disengaged. In an intermittent application where you are going to stay within the rated torque of the PTO, this will work just fine.
Again, sorry for the delay, hope this helps
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