This commemorative cap was sold in limited quantities to celebrate jockey Yutaka Take's 3000th win. I believe it was limited to 3000 pieces. It has what appears to be a serial number (see image 3). The number "2" doesn't seem to be rust, but it won't come off even if rubbed by hand. Image 8 shows the fastener on the back of the serial number. After obtaining it, I kept it in unused condition and stored it with care. However, there is some slight deformation. Please understand this before purchasing. No claims and no returns are accepted. Shipping will be via Yu-Pack in a 60-size box.