Thanks to David Cox for the heads up about this rare footage! The details of the video on YouTube are as follows:
Judy Garland and a very young Davy Jones with various other celebs at a party at the Tower Suites at the opening night party of "Oliver" on January 6, 1963. (Silent)
Micky Dolenz Live!
Dolenz, Jones, Boyce & Hart returns
50th Anniversary Editions