The AMI Playmeter Pinion part number F-3405 and Pinion Bracket & Bearing Assembly part number F-3634 are found on the mechanisms in the following AMI models:
G200, H200, H120, H100, I200, I120, I100, J200, J120, J100, plus the K200 , K120, K100, Continental, Lyric and Continental 2 (these last 6 models also require the F-8850 Pulley which is not included here).

The mechanism model numbers I am aware of for these models are:
900 (200 selections, electric select)
900-1 (120 selections, electric select)
950 (100 selections, manual select)
960 (200 selections, manual select)
985 (200 selections, electric select)
(990 (100 selections, electric select)

The mechanism part offered here is in good used condition.