It's based on a Pro Issue glove, but the 'PRO' indicates it can be bought from a store. For example, Chicks Sporting Goods on the West Coast sells many of these gloves that end in "PRO." It's nothing special if you live near one.
PRO200- 11.5" Deep and Wide Pattern
"6"- Web Code for H-Web
"JA" was/is a Rawlings code of a two tone for the Pro preferred series.
K= Kip.
PRO- Refer to my above post.