This sale is for a mint condition, barely used Mamiya RB67/ RZ67 bellows lens hood G-2 for most of the Mamiya RB67 / RZ67 standard and telephoto lenses using a 77mm filter ring – or for a host of other lenses as well.
This hood has no signs of use that I can find (apart from the missing 300 mask on the front – which only helps with the 300mm lens and apart from that you do not need it), and includes the essential 77mm adapter ring. The instructions can be found in the Downloads section. Extremely hard to find in this condition.