New old stock Dynaplate radiotelephone grounding device kit as shown Marked " Size D-8" the brass plate itself measures 8"x2.5" (and looks to be approx 1/2 " thick) so that seems to line up with modern model number 4008. (we do not see 4008 on the kit so just our best guess) Cool display wooden box with clear plexiglass type top still "sealed" shut with a small brad. We are not sure if they all were sold in this fancy package back then or if this was a counter display sample? Included "magic sliver solder" which the new models do not include? It looks like reddish liquid in the tiny bottle along with a glob of silver paste in bottom, maybe has to be stirred first? No guarantee on that. I would guess there is precious metal value in the blob of silver if it is pure. Gold plated screws too! (although they look a bit dull so maybe not pure gold plating?' We are not experts so you are buying what you see. Sold as you see it. Buyer to have proper knowledge 2lb 11 oz kit weight wooden box is approx 12 x 5.75 x 1.25 " shipping cost includes insurance