This is a neat vintage Sylvania Service Hints Volume Four 50th Anniversary Manual dated 1951. The manual comes with the original mailing envelope with the original recipient's address which has been covered in the picture out of respect for his privacy, although I doubt that he is around to complain. The envelope is a bit rough but complete with legible post marks on the upper right. The booklet is in good condition with just some yellowing from age. It has a single hole in the upper left corner, but the pages are otherwise loose or unbound to the booklet. Also included is a small trifold Sylvania Tube Selector pamphlet that is in excellent condition. The manual is small in size measuring roughly 6" x 4 3/4". Please email with questions. Item ships within two business days of payment. In order to keep prices low, items under $50.00 ship without a packing slip. Thanks for looking and have a great day. CBA5-Q41024-MM