I buy and sell old electronics and came across these a couple months ago.
Sylvania and Griffiths 21ZP4A 21WP4A 17CP4 17HP4 17RP4 17DTP4
Not exactly sure what to do with them. They are so old they don't even have the implosion band around them. I *really* don't want to ship them. I'm in the Duluth MN area.
