3/8 inset self closing hinge

it is a 3/8 inset self closing hinge, we need 50 pairs of them. I have ordered several different brands and none fit - the spring area is more narrow than the new replacement hinges, so it will install in original holes but door will sit too far over so it wont shut properly.they are most likely 30 yrs old, original with the house, but many have been painted several times and we would like fresh. satin nickel is 1st choice, followed by white or bronze.

markings on back of hinge say "USA pat. no 338L882, 338L333" number on left "3478, 4" numbers on right "591, 51". marking inside inset "3478" and "595, 63"