How to distinguish between true and false Lao Fengxiang?

I bought the brand's gold ring a few days ago ~ But the local shop is actually not selling the gold jewelry that is not Lao Fengxiang, so I suspect that the steel seal engraved in this specialty ring is Lao Fengxiang L Thousand Football 13 Excuse me. Really true Is the back of Lao Fengxiang on this format?