The tube I showed in the pic I recon would be from the 80's I bought a entire carton as were on special, (and those days money was less scarce), when I was first taught how to weld early 70's, I purchased a 2lb pack of Philips electrodes ( yes the same Philips that used to make tv's here) they were wrapped in a bitumen type brown paper, to this day I believe they were best electrode I have ever used.