Swivel top, I have one like this 1963, a wonderful, quiet vacuum.Same basic body as a Saniway or Kingston, built forRoyal by Kingston in Bronson Michigan.
The link didn't work but putting in the ID number on eBay did. That cord is definitely a botch job with 12ga. extension cord, definitely not to be used for this application in terms of structural and electrical weakness. Would need a proper gauge cord for vacuum cleaners re-re-wired back on.
They can keep "california dreamin" with that, I wouldn't risk it for a $100 price tag.