STC 128 Combination Lock is Stewart Coffin's sequel to Rosebud 39. Per Stewart Coffin “it is quite unusual in that it combines baffling coordinate motion, combinatorial confusion, and puzzling serial interlock all in one”. This is a difficult puzzle to make and solve. The Rosebud assembly jig can be used but is not necessary. Finely crafted from fine hardwoods this is an extremely rare design that is highly prized by serious collectors.
