These look cool! Oh gosh, movie stuff we know can be so generic, if their owner's expectation is scale accuracy. Also if they are from a fantasy film like VTTBOTS .....then accuracy, like caution is tossed into the wind!
To save money and production time, the 20th cent. prop department might have loaned these for use in the VTTBOTS motion picture (20th Cent Fox - 1961) from an earlier studio production, then the torpedo stock footage from the feature...continuing it's use in the TV show version. Remember it must be hectic producing a weekly TV show, so even half plausible stock footage available might save the production team some headache aspirin.
What other significant submarine films were made about that time before VTTBOTS ......late 50's early 60's? They could be German torpedoes (the black one shown?) from the 'Enemy Below' (20th Cent. Fox -1957) or 'Run Silent-Run Deep' (20th Cent. Fox -1959). The beautiful brass/silver torpedo miniature looks like a dead ringer (in my opinion only) for an American Mk. 14. If air powers them, then a MK. 14 would increase the likelihood. Mk. 18's were electric specifically so the air bubbles would not be seen, but remember 'Hollywood' is not looking for scale accuracy as it is for dramatic visual effect (the bubble wakes)....so from the studio's point of view....Mk 14 or Mk. 18?- what's the difference! Rent these cool sub pictures and see if your torpedoes are starring. My wild guess is that the black torpedo is originally from 'The Enemy Below', and the gorgeous silver and brass one is from 'Run Silent-Run Deep', then making cameo appearances in VTTBOTS. I have seen the effects sub model for 'Run Silent Run Deep' in a Oakland, California restaurant (same effects model used in 'Torpedo Run' too) which I guestimate this very 'rough' effects model was around 1/32 scale. Would there be any correlation between the scales? They don't need to be...just one more thread to explore.