Rcbs 505 help

[Mavrykk]

I need some help identifying where this 505 was built. NJ or mexico.its semi older. And the part number is 7411 01.
And It does have the rotating barrel poise for the 1/10th grain side.
I cant tell anything else from it.. as its not in my possession. Any help would be awesome. As im ready to throw my m500 off a bridge.

 

[krunchnik]

I think that's actually a 510-
I had one exactly like that I bought new back in the early 80's-
It was a great working scale-I like the barrel rotation for tenths of a grain-
I couldn't find one when I started reloading again a few years ago-so I bought the 1010 model-more expensive but has the barrel-
I don't think they were built in Mexico but I could be wrong-