Finally part of the club

Got this ole ITT 160 g3 off marketplace for $400. from what I can find online, the res 64-72 lp/mm and SNR is 28-32 giving an FOM of 1792 min and 2304 max. but it differentiates apparently depending on what year it was made. I have no clue but the guy got it from says he bought it new back in 2010. And I can’t find specs on one made from 2010.