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I do it with the wire wheel as Shaun said. Just put some tape on the scales to help protect them if you slip. It might not keep all scratches off if you slip but it helps.

The Hot Pin Test works, but be sure to do it in a spot that isn't noticed much. But like the others, I agree that the last pic dont look like Ivory.

I do use my set. I use all my razors. The set you have might not be a big well known name but it is an ivory set so its nothing to skoff at. Many folks would be very happy to have your set in there...

Good save Bob. I was wonderi g about this but hadnt had a chance to check back.
If it scale is cracked dont try to tighten! I too have a nice 7 day set in ivory and im too scared to mess with the...

Save the box if at all possible.
A closer pic of one of the razor scales your worried about would be more helpful.
Do the peens have collars? If its a collarless peen you might have ivory as that...