Ink signature, “Charles H. Mayo,” on an off-white 3 x 2.5 card; and an ink signature, “W. J. Mayo,” on a 3.25 x 2 off-white card, both with clipped 1927 Rochester, Minnesota, postmarks affixed to the cards. In fine condition, with a few light bends and mounting remnants to reverse from previous display in a scrapbook. RRAuction COA.
