Recently I purchased a vintage Ampeg SVT 300 Watts amp with a 8 x 10" speaker cab. It's sounds awesome but the exterior is quit worn. I'm therefor looking to refurbish this puppy. I'm just not sure from what year the amp is, so I don't exactly know which logo to put on it. The serial number is 732323. Can anybody tell by that in about which year it was made? It looks a lot like this one, but the logo is missing and from what is left of the face plate I can tell the text should be black.