Maybe a coincidence but was the late Ron D. favorite color ink.
Also has been some "suspect" signed currency hitting the market in the last couple years usually signed in pencil. Always Hall of Famers and never common players , all factors combined I'd suggest unless you can get it for $2.00 (Its worth at least that much) you've overpaid , And even if someone says its authentic it does not make it so. Use the dough to have a nice dinner and a night out.
A REMINDER the two most often forged signatures in the hobby Babe Ruth and Lou Gehrig.
_____________________
jim@stinsonsports.com
Vintage autographs for sale daily on my web site
stinsonsports.com