How do I tell the difference between the two boards ? BTW, you can see pictures at govliquidation.com. Just type in Bridgeport in the search field. It's located at Cannon AFB, New Mexico. I am just trying to decide a rough idea of what it's worth. It's really more than what I need, as I think a small manual mill would suffice, but if it's a bargain, i'd go for it. (It WOULD be nice to have a CNC controlled mill !!)