The high condition vent rib IJ single trap pictured in Frank Conley's book was from my collection. I bought it from a friend as part of a three gun group of totally rusted guns for $39.00 each. All three guns cleaned up to near mint condition, including a great EE Grade steel barrel Lefever. I installed a new Jostam pad on the Iver Johnson and foolishly sold it. It is the best one I have ever seen. I would like to have another chance at it.