I have a belt holster - likewise, Navy pilot issue (my grandfather was on a carrier on WWII, and got it from a pilot). But IMO it was meant for external carry, not concealed - that big honkin' hammer would catch too easily on clothing.
I agree. It was over the neck and shoulder over the flight suit. Only problem with it is that it isn’t a +P capable one, otherwise it’s tight, accurate and damn well made.