What's wrong with the stamp?

Nowadays, many people classify interesting products as wrong stamps, which is actually different. First of all, we should distinguish the difference between wrong stamps and interesting products: wrong stamps are stamps designed or printed incorrectly, which makes all stamps or one stamp in each edition make mistakes repeatedly; The interesting thing is the mistake in printing, which makes some stamps wrong. For example, a red ticket, a Cai Lun ticket and a waiting ticket are all wrong editions, while some stamps are interesting products such as rubber printing, missing teeth and discoloration.

According to your question, it is actually to classify interesting products as wrong stamps. Anyway, if it is different from common sense or normal stamps, it is the wrong ticket. If they are wrong, the above example is as follows.