Sylvania Electron Tubes 6AU6 2pcs In Box and 13 similar items

Untested. No visible red plating. Box has wear. Sylvania Co, tubes made by RCA 1 tube has identifying tab. The other doesn't, so I'm unsure of it's type. Only identifying mark is 5Z ***Disclaimer on old/vintage/antique books/paper and the like: Some wear from age, use and storage which may or may not include some, none or all of the following: writing/personalized notes on inside covers and title pages(or notes on pages in the case of songbooks and sheet Music), small tears, creasing, etc.... all typical Vintage and antique book wear. Opposite side may or may not have prints or text which may or may not be related to one shown. Your opinion may differ. See top of description for any outstanding flaws. **All items pictured are fully usable and/or functional unless otherwise noted** Inspect pics closely and ask any questions before buying or offering. Tons more toys, collectibles, paper, antique, vintage ephemera, maps, engravings, prints, vinyl, vhs, media, books, bags, handmade and more! Will combine shipping!