1964 Fender Astron MiniMite Capacitors Pre-CBS Tube Amplifier (2) 40uf @ 450v filter caps & (2) 25+25 mf @ 25v coupling capacitors. These are perfect for either re-stuffing to give your amp an all original look or you might get away with re-using them. I’ve had these for at least 25 years but I cannot recall which amp they came out of. It had to be either a Super Reverb or a Deluxe Reverb because those are the only two actual pre-cbs blackface amps I recall owning in the last 20 years. Both of the 40uf filter caps appear to be somewhat within tolerance if you wanted to put them back into use. The one with the best ink stamped date code (6417) is the best one measuring 57uf and 0.53 ESR. The other 40uf would probably be acceptable but it has a slightly higher drift at 74uf & 1.47 ESR. The two coupling caps are a different story although they are fantastic candidates for re-stuffing with new caps to give your amp that original look. Three sections the coupling have drifted severely from 25uf to well over 100uf although the ESR readings are acceptable on all three of the readable sections and as you see one sections has zero capacitance. The date codes on the two 40uf are 6413 & 6417 (13th & 17th week of 1964). The two multi section coupling caps have matching date codes at 6152