Nice find! However in general, rare doesn’t equal high value. To have increased value requires demand. Someone who collects knives from Rhode Island (or New England), or rare stamps, might value it for their collection enough to pay a premium. It’s a good conversation piece - Rhode Island has an interesting knife manufacturing history.
You answered your own question about rarity. Two years in business. Using the ”search” function here I could find only one other example here on AAPK. That in itself is pretty rare.
Ken