Hi 64tbolt460,
From my experience, the the first two letters mean "Face Value". However, I could not determine the last letter.
Also, I have found a useful resource on the internet which provides a list of all the acronyms and abbreviations used on eBay. Please refer to the following web pages:
http://www.tprweb.com/public/324.cfm
http://www.lyndaroxanne.com/LRsite/pages/acronyms.html
You can find a lot of information by clicking the link below:
http://www.thetermitesite.com/acronyms.htm
Regards,
Smileawhileshaji