The original logo of Rolex was a palm, indicating that the brand's watches were handmade. Later it gradually evolved into the Crown trademark. \r\n The Tudor like watch back cover and watch handle (with the crown mark on it) are the same as Rolex. \r\nThere is a "horse" logo on the back, it must belong to "Omega"\r\nThere is a RaDo logo on the watch, which is radar\r\nThere is a small fish and something like an M in the middle of the back case of the Longines watch The logo\r\nInager is a planet with a halo\r\nPlum Blossom *** has 3 brands:\r\n1, domestic red plum\r\n2, Swiss plum blossom\r\n3 , it has 5 points, it also looks like a plum blossom, but it is a Category 1 watch. I forgot the brand, and you can’t usually see it\r\nAren’t there letters under the logo of the watch? The plum blossom in Switzerland is Titoni\r \nHaha, but even if the logo and letters are correct, it may not be authentic. You also need to look at the movement\r\nTissot's standards seem to be on the dial. Its model is usually marked with a T on the watch cover. The series of numbers on the switch is like: Model T81.7.221.12\r\nDouble lions, there is a double lion logo below 12 o'clock\r\nIt looks like a flying eagle with the number 7 inside. This model must be from Citizen.