Scales ?

Does the difference in scales, if they are original, flat vs rounded tell anything about age ? Seems like I saw a post about that one time, but don't have a clue where I saw it. Thanks and if you saw the post I'm talking about, please post a link to it. Thanks again.

It depends. Most types of scales have been used since the 1800s. Types of celluloid, wood, horn,bone ivory. There are a few types like hard rubber that were used pretty early on but in general the type of scale or shape is probably not a good indicator of age. Maybe more the condition of them will tell you more.

These two threads:

Age of a Razor and Oldest Razor in your Rotation

may not be exactly what you're speaking of, but there is plenty of good information about razor and scale dating there, and some links which may lead to what you are looking for.