I have no idea what he is talking about. I was a dealer from 1978 to around 1992. I saw both of them 5-10 x per year during that time frame.
Dimaggio COULD be very nice, if he was in a good mood, but that was very sporadic. 2 stories exemplify how he could be. 1) At a show at the Ft Washington Motor Lodge(done recall the exact name) in 1982, I was a 16yr old who had 107 items to get signed. Most were for resale, but many were for pc. The promoter, Frank Garo, closed the door to the room while he signed my items. He chatted with me very cordially, as I asked him about Lou Gehrig. I left that room thinking he was the nicest guy. 2) At one Ed Keetz show, probably 1986ish, in Albany, Dimaggio actually wouldn't sign any more for me until I brought my collection binder up to his table and proved to him that I collect HOF yearbooks and would get the covers signed by HOFers. Below are photos of two of the items he stopped signing until I showed him the binder with the rest of them
Mantle, otoh, was fairly chatty, even when drunk. Now he wasn't always in a great mood, but more often than not, he would look at you and smile and chat a couple seconds. Also, he never signed a bad graph that I saw. He could be falling down drunk and still always chose the best spot to sign and his sig was always perfect.
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