This is a sinking minnow, approximately 45mm in size. It appears to be made of balsa wood and weighs around 4g. I purchased it on Yahoo Auctions, but I can't find any details now, as it's no longer listed. I remember buying it for around 2000 yen. The red paint on the back is chipped, but it only happened in the tackle box during storage. There is no damage or water infiltration.