Stewart Coffin made the Button Box (STC #52-B) for an IPP exchange. It is another in his explorations of the Pennyhedron (STC #52) design, consisting of two mirror-image halves that form a hollow object. This is a unique offering: both the IPP exchange version and a rare prototype version of Button Box together!
The IPP version was made from four contrasting woods and comes with a wooden button (also a Coffin original!) on the inside. The prototype version has a sticker with 52-B in Coffin's own hand and is signed internally "52-B STC 1995". This is a very rare set!
The fit on the IPP version is incredibly tight, but perfectly functional; the fit on the prototype is very well-tuned, neither too tight nor too loose.
This set comes from the collection of the late Saul Bobroff, which we are selling on behalf of his widow, Paulette.