Typically Tyrus would use slashes (/) when dating the ball. The only other example I could find with dashes (-) in the date, very similar to yours was a replica ball on eBay....
https://www.ebay.com/itm/15593354227...evt=1&mkcid=28
Granted it was an abbreviated search, and probably doesn't reveal as much as the sig itself. I don't love the formation of the "T", but have seen that style on rare occasion.
Perhaps you should re-post in the autograph sub-forum.... there are some long-time veterans over there who can provide some stellar guidance. Best of luck!