I have an Oliver 70 Row Crop with no engine serial number tag.  The engine block has a number on the right side top corner 44031 G3 on the left side is an H21Y. 
The radiator has a tag number AD 3297090. 
The throttle is a notched bar on top of the transmission, with a 6 speed transmission. 
It has a DELCO REMY Distributor number 1111412 9B3
Is there any way to identify the year of this tractor with these numbers, any help will be appreciated.  Thank-You, Red