One of the last styles of old National finger picks to be made in the USA began appearing in music shops in the mid-1980's. Note the "U.S.A" is always off-center from the hole in the blade. Nearly identical picks have surfaced with "Made in Taiwan" stamped on the front. The metal used was not nickel silver, and the pick is thicker and heavier. The blade tip seems to be less round than on the older styles, and the bands are more rounded on the ends. Tom Adams can be seen wearing what appears to be a pair of these on the cover of his 1990 release Right Hand Man. I've discovered another style similar to the one above made from a different die, stamped with the patent number, U.S.A., and made of steel.