Doc Savage Club pulp pin and membership card

This Doc Savage Club membership card and pin arrived in the mail today. Unfortunately, the card has seen better days, being nearly torn in half, but the pin is quite nice. However, what makes this one unique is that it used to be Walter Baumhofer's, and on the back, he's scrawled two very simple pencil sketches as well as fellow pulp artist Nick Eggenhofer's address. A nice associational piece from the first great Doc Savage artist!