That's an old Sylvania part number. When Philips bought Sylvania they began changing them over to their own 10 digit system and soon after that to a 12 digit system. I have a NAP parts price book from 1983 which lists the old Sylvania part numbers in a cross ref. to the NAP numbers. That number isn't in there. Of course I didn't save all the old books when the new one came out each year. I do have a 1986 NAP price book and they don't list any crossovers in it at all. I assume it is a projo tube. If you can give me a possible year I will try to look it up in the microfiche service info. Russ Hoyt Hoyt's TV Exeter, NH ----- Original Message ----- From: <Royal19960@xxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Thursday, April 22, 2004 1:47 PM Subject: [TechAssist] anyone have info on this old receiving tube? > Hi all. > We ran into a few new/ old stock tubes by Sylvania. They are stamped > 13-27681-4. > Any of you guys remember what these are? > Thanks in advance > Roy > Roy Adams > Bonded TV Service > 5158 W Forest Home Ave > Milwaukee, WI 53219 > 414-541-9111 > www.Bondedtv.com > we have thousands of tubes on the site > Webhosting from only 4.95 a month at Bondedhost.com > > > > -------------------------------------------------------------------------- --- > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/