Was browsing and I found this Joe DiMaggio. The COA is their own "rendition" of a PSA cert. The signature is a little atypical from the ones I'm used to. I would towards not authentic to be safe because the g's look different but I wouldn't be surprised if it is found to be authentic. It is some authentic characteristics but I'm not sure.
http://www.ebay.com/itm/Joe-DiMaggio-HOF-55-d99-MCS-COA-Letter-auto...