Gary Yamamoto Bottom: Jumbo Grub, Gary Yamamoto stamp present Top Left: Flat Tail Worm, inch size unknown Top Right: Imo Grub (Imo Grub) The presence or absence of the stamp likely indicates the year of manufacture. Please check the colors and quantities in the images. These were stored in a box for use on a bass boat, but are being sold to organize my collection. I don't think there are any hook marks, but please understand that these are used items. Shipping will be via Yu-Packet Post Mini.