Artifact Details Title Calcu-Pen Electronic Calculator Catalog Number 102677940 Type Physical object Description Yellow Post-it note attached to object was removed. Written on note was "Some of the numbers can't be entered using the keys - malfunction." Object consists of pen, box and instruction booklet. Date 1977 ca. Manufacturer Tru-Phonic Inc. Dimensions overall: 3/4 in x 6 1/4 in x 3/4 in Category Calculator/electronic Credit Gift of Paul M. Nemecek Lot Number X4094.2007