Book of the Mind. Peter Warlock & Tannen’s, ca. 1960s.
A mechanical book test of notable ingenuity. The effect centers on an ordinary-appearing slate which secretly contains the necessary “keys,” available at a moment’s notice and concealed when not in use. The method is entirely self-contained within the slate, which appears completely innocent in performance. Supplied with the original books and instructions. Provenance: From the collection of Andrew Pinard. Uncommon.
Book of the Mind. Peter Warlock & Tannen’s, ca. 1960s.
A mechanical book test of notable ingenuity. The effect centers on an ordinary-appearing slate which secretly contains the necessary “keys,” available at a moment’s notice and concealed when not in use. The method is entirely self-contained within the slate, which appears completely innocent in performance. Supplied with the original books and instructions. Provenance: From the collection of Andrew Pinard. Uncommon.
