Thanks to everyone for the responses and I will return to the sale location (estate/yard sale at a rather nice home) tomorrow and see it it is still there and check it out further.
John, thanks for the info on what to look for, if I do buy it I will post pictures. I do believe it is restorable/shootable if proper ammo can be located or reloaded.
I was all set to pass it up but if it is still there perhaps I can get the seller to accept less for it, it does seem a bit much at the asking price. My wife went out early to the sale and I was home, she called me and said they had an "old musket" for $105, I told her to keep it in her hands until I arrived and was there within 5-10 minutes. It was not an "Old Musket" and it did look like $105 on the price tag but in reality was $195 so we looked around, bought a couple of things and left. I got a nice small Nicholson triangular fine for gun work for $1, a nice flat 2 sided stone for trigger jobs for $1 and a real nice like new Mikita codless drill with charger, 2 batteries that hold a charge great, a charger, and a case for $35. I wanted to offer him less but it was like new so I paid the big bucks. Well this means myself and my wife will be off to the yard sale again tomorrow. I hope the Rolling Block is still there and he takes an offer....<><....

P.S. - it did have a full length mannlicher style forearm and a long rifle vs. carbine style barrel. It also had a rather small rear sight...
P.P.S. - Datil, is your 7mm Rolling Block a 7x57? If so would you be interested in selling it to me? It sounds like the perfect match to my 7x57 Handi and something unusual to carry in the Maine woods for deer and coyote and it would look great to my wife hanging in the house as well so she would not object, a double winner!....<><....