Welcome!

With antique razors, or others from swap meet type location, you really need to be careful. If the seller will let you handle the razors, you can get a better feel for them, and it allows you to check for additional markings.

I would recommend buying Lynn's DVD and watching it before you go shopping, as he goes over what makes a good antique buy.

Let us know what you find, post pics, and may you forever find joy in S/R shaving, like the rest of us have.