Wondering how this works.

As of recently I have been pretty broke, well as far as extra money for collecting goes. I started collecting peace dollars a few months ago but had to stop due to lack of funds. So recently I developed a plan to lower my price range and go for what I can afford.

At any rate, I ran across a coin that caught my eye; however its that new NGC graded "details." I guess NGC started slabbing problem coins, which I have no problem with. I was wondering though, can I add a non-number graded coin to my reg. set?

Best wishes, Matt