489 cased 4:10 sure grip chunk

guys. i need help figuring out what gear it is. i do see 4 springs in it. but the big ring gear is a richmond and 412e is incribed where you would normally see the ratio. i spun pinion a little more than 4 times around.

so i gather it is a rebuilt 489 chunk with richmond 4:12 gears in it

BECAUSE I WAS NOT TOTALLY CORRECT ABOUT THE WHAT GEARING IT WAS, I AM WILLING TO LET IT GO FOR 375.00