This is a vintage hardcover book (written in German), ELEKTRISCHE UHREN und SIGNALEINRICHTUNGEN (Electric Clocks and Signal Devices) by Ludwig Lehotzky published in 1951, It has 168 well-illustrated pages on clockmaking. (note again: it is in the German language).  It comes with the 16-page insert (beilage) that has diagrams of clock workings. The cover shows some wear, otherwise it is in very good, clean, solid condition. Buyer to pay with eBay approved method.  Buyer to add $4.99 for Media Mail shipping and tracking within the USA only.