I went to the local antique store, and purchased gold Gillette DE Razor. There was a box of old Gillette razor blades that went with it. They were the old green package that says "King Gillette." I opened it, and it looked clean... the side says no stropping, so i thought, "why not shave with them?" Ouch!!! These things pulled and were dull. I felt like i was shaving with a brick. I thought they would be pretty sharp. Is this common...? Has anyone else made this mistake?