Seiko gold buckle. 15mm. Probably deadstock. Vintage item. This buckle was originally included with Seiko vintage quartz, hand-wound, and automatic watches. The strap attachment width on the buckle side is 15mm. How about taking this opportunity? I am decluttering and selling many items I collected in the past!! Please be sure to check my profile before purchasing. Purchase = Profile confirmed and agreed to, and we will begin the transaction.