Judging from the auction, more than 90% is true.
It's passed down from family to family. It may be true or false, so we need to find an agency to identify it.
I bought it from the internet at a low price, which is basically fake.
From the watch shop, the price is extremely expensive, which may be true and needs expert appraisal.
In fact, many people lie to those who don't understand the market, spreading rumors and deceiving people, hoping to wake up when buying. Watches are extremely expensive and won't be so easy for you to touch.