I said I like those obscure brands watches. This is another one that I think few people knows about. I searched the web, and found no information about a Seikosha pocket watch. Still I hope someone could help with its history and background. When was it made, and how many were made? There is a number of 21 under the balance, Is it a caliber number? There is also a number on the inner side of the caseback.The watch is big at about 50mm.