SOLD Another Vintage Charles Perry Brass Ball PuzzleI found one of these a couple months ago, and just went back to the NH dealer who sold it to me to scoop up the other he had, both purchased from the same collection. This "ball" puzzle, comprised of interlocking solid brass pieces, was designed in 1967 by Charles O. Perry (American 1929 2011), a sculptor and designer best known for monumental structures composed with mathematical complexity. There is one "key" piece that spring locks into place to