catalogue page 7-8. Pens 15 and 24 are from ebonite and and celluloid, with Dutch water buffalo horn. Pens 25 (cocobolo wood), 27 (celluloid), and 28 (celluloid) are small pens, 12cm. Pens 29, 30, aand 31 are a new design with minimal trim. They are made from buffalo horn, cocobolo wood, and ebonite respectively. Pens 32 and 33 are made by Tanaka, from cocobolo wood and ebonite. Suffix 14k in the number indicates the trim is made of 14K gold (ie, not gold plated).