The serial number is from 1964.The drum is painted on the outside you say?Wow, I didn't know they painted the outsideof drums back then .... hmm ??The mufflers have me puzzled (read on): First, about wrap colors: In 1964 Ludwig had wrap colors in black:oyster black pearl, black diamond pearl,and a third color. I can't remember the nameof the third color. (I think it was called galaxy ??) It was kinda like a sparkle color. It reminded me of the other sparkle colors (example: blue sparkle, green sparkle, etc.)except this one was black. Anyway, they never offered a solid black colorin 1964 as a wrap finish, but, you say theoutside of this shell is painted.... hmm ?? Here is a link to check colors out:link: http://www.vintagedrumguide.com/ludwig_finishes.html I might be able to help you more if yousend me (email) a few close up detailed photos... NOTE: Ludwig did not make drum mufflers with round knobs in 1964.They were baseball bat type mufflers (until 1968). My guess is that someone must have added those type of Ludwig mufflers at a later time. I don't remember Ludwig putting mufflers on topAND bottom of the same drum for use with a drum kit,however, what troubles me most is the round type muffler knobs. I'm puzzled about that !! .... Scott McLean.