Identifying sterndrive AQ110

[syale]

My Father in law has an old boat from the 60's that he inherited from his Father In Law. We have identified the engine as a AQ110, but have no idea how to identify the drive. It has a plate on front of the drive that shows "Patent pending model PZ", but can't find it anywhere online. Can i get ny help identifying it

 

[sandkicker]

1) Shift mechanism is via a small external box on the starboard side of the leg
2)Exhaust exits the transom to the right of the transom shield, with a large hose to
a fitting that acts as both a water inlet ( water enters transom a couple inched above the bottom
and an exhaust port.
3)Drive lift mechanism doubles as the steering mechanism.
4) Manual lift loop style handle on back of leg.