Can I practice with these, I bought two razors at a flea market and I want to practice setting a bevel and go up to shave ready. They are old and rusty so I don't care if I ruin them in the process BUT I don't want to ruin a rare antique razor! Info on them are (1) Geneva Cutlery Corp. Geneva N.Y. on the other side it says Special A (2) H. Boker & Co. Germany the other side says Red-Injun No. 102 R.P. Any info will be appreciated
Tim