Updated: Oct 29
The Hollywood holster set was so-called by Arvo Ojala because he was based in Hollywood; it is not the pejorative term that it has been made out to be by today's writers.
1965's "I Spy" above, with Alfonso's inverted shoulder holsters. Below, one such holster recently has appeared on eBay. The arrangement of spring wires would have at least kept the pistol in place for the few minutes the holster was visible on screen :-).
Which then reminds me to show off that same era's, "The Man from U.N.C.L.E.", below:
Read all about the evolution of today's gunleather during the 20th century in the second edition of my book, published 2022 and available at www.holstory.com .