Hi there, I just got a bracelet ( only a bracelet ,not a watch with it) ,don't ask why only bracelet, however I cannot find vast information regarding the ref number. It is 1621/990 and I only find one model matching the bracelet and its 21mm lugs - the Broad Arrow GMT model. Any other models that can be equipped with it? Or any website with bracelet references? Thanks in advance. Dimi