Martin items are very common at yard sales and flea markets in this area. Of course, I'm only 50 miles from Florence.
By and large, the Martin skillets are pretty good. They are very even heating, much better than most pans made in the last 50 years. If you look on Ebay, you will usually find 5 or 6 Martin items though many of them are mis-listed. They tend to sell at big discounts because they are relatively unknown.