I am offering a full three volume set of the classic Harmsworth's Wireless Encyclopedia . The publication date is approximately 1924. The hard covers have the appearance of well loved workshop manuals with some fading. However the contents are all that one could want . All the printed pages, the illustrations and foldouts are in great condition. There is a reason why this is one of the most sought after books on classic vintage wireless. It was published at a time when the serious constructor was required to make everything. No details are left out. All the tools and basic materials are fully described as are the fundamentals of the science of radio design. This volume is an absolute must for the vintage wireless enthusiast. Please note that international postage is an estimate.Please request a quote from me.