The Castaing machine applied the lettered edge to bust half-dollar, but what...

[James_OldeTowne]

... does the mint call the machine that applies the edge to Presidential dollars?

[WoodenJefferson]

"edge lettering machine"

 

[bsshog40]

"edge lettering machine"

Well at least they came up with something original.

[Keigwin]

The edge lettering machine isn't used for proof presidential dollars, interestingly enough. Instead, the Mint uses a three piece collar and the edge lettering is incused at the time of striking.

 

Edge lettering is therefore consistent from coin to coin on these. It is always in the same position, always oriented the same way (and not random to obverse and reverse sides, as it is on other coins).

 

Does anyone know which method was used on the UHR's? I ask because one of mine has very insignificant marks on the rim face which I think is from the edge lettering machine. It is graded 69FS but I think these marks, as mint-made, should not matter. Unless, of course, the three-piece collar edge lettering was used.

Lance.

 

 

[rrantique]

Yes Lance, the UHR's had a 3 piece collar. (thumbs u

[PerryHall]

Yes Lance, the UHR's had a 3 piece collar. (thumbs u

 

.....just like the original Saint Gauden's double eagles from 1907 to 1933. If you look at the edge, you can see the raised vertical lines where the collar segments come together.

[Keigwin]

Yes Lance, the UHR's had a 3 piece collar. (thumbs u

 

.....just like the original Saint Gauden's double eagles from 1907 to 1933. If you look at the edge, you can see the raised vertical lines where the collar segments come together.

Ah-so. Indeed. Thanks!

Lance.

 

[WoodenJefferson]

8:20 into the documentary the narrator called it an "embossing machine" but that may very well be poetic licensing for TV