Good little collection.
Model 3 Rotomo....Correct Engine Serial, 128,000-200,000 over 3
Model 5 Series 3....AA AAA AAAI IAAC plus a few more Variants, 0-50,000 over 5/0
Model 5 Series 1.... 150,000 approx- 300,000 over 5
Model 4 STD ....110,000-330,000 over 2/4
There are a few things I can see on this model that make me think there is a possibility it was once an Automatic. Painted housings, broken front Predicta flap housing and its shade. If im correct and it has the right serial Id say its engine no is 114,000-120,000...but its just an educated guess. The Total Automatic Serial Run is from 110,000- 128,500 approx.
Enjoy your restos. If you need a hand with originality, please dont hesitate to ask.