Here's an original Eimac 3-500Z complete with packaging. Up until yesterday, it was unopened. Now, the tube packaged within it resides in my Ameritron AL 80A. 3-500Z Eimac tubes haven't been made in some while. So, I thought that someone would want the box for his or her collection. The box is in very good shape. I'm asking $35.00 for it, and that includes USPS Priority Mail shipping to your QTH. My email address is: (my callsign) @yahoo.com. Thanks for looking, and 73!