case 580CK year of make unknow

We have a Case 580CK from around 1970,
i cannot read the serial number because it is been painted over many time, i have the shop manual from 1968 which is i think the year of make , one for 580 tractor and one for model 33 loader and model 33 and 33S backhoe.

1 - it is a diesel ( 188 i think )
2 - it has the "power shuttle" which is to my knowledge the forward reverse hydrostatic inverter

here is what i found as far as number are concern
1- on the side of the transmission A38359
2- On top of the hydrostatic cover A37222
3- On top of the transmission cover FFA36155
4- On the differencial A38714

thank you in advance for any type of info .

happy rebuilding & refurbishing to all

regards