Whats the difference in Dubl Ducks?

[Sure Shot Rick]

What is the significant diferences between the Satin Edge, Wonderedge, and Goldedge besides just their names. Is one more desirable than another? Who is restoring razors? Some where I got the impression that one of the razors had a special temper that made the steel extra hard, and holding their edge better than the others.

[randydance062449]

The Wonderedge was frozen tempered. The other two were not.
The difference between the Goldedge and Satinedge is the grind.
Probably also the year of manufacture.