First is what might seem like a pretty pedestrian black basketweave law enforcement duty holster from the 1970's or 80's. However, instead of being the usual Safety Speed or Safariland brand, it's made in Australia by Hellwig. Marked as being for a K-frame with a 4" barrel, it incorporates an interesting dual retention system. There's a conventional snap strap over the hammer, but also a leather covered spring bar that presses the gun backwards so that the triggerguard is wedged under a second fixed strap. To draw the revolver, it must be initially shoved forward against the spring bar to clear the triggerguard.
The second is a much more ordinary design, but is neat in that it's specifically sized to accommodate the Model of 1917 (either the Colt or S&W version, I presume). Central Sporting Goods & Loan still exists as a firearms retailer at the same address that's on the holster. Maybe someone from the Seattle area can provide some historical background regarding Central Sporting and perhaps even shed some light on who might have actually made this holster back in the day.