Managed to score one of the Bucheimer tan leather cartridge pouches that by the looks of it was seldom if ever used other than fitting six cartridges for $15. That's cheap these days for cartridge pouches, doubt seller had any idea what it was. Pouch will match my Bucheimer FBI Consealer tan leather holster for the M13. I'v taken a liking to the Bucheimer holsters and accessories, they had to be pretty well made and designed for the FBI to use them. Photos of both the Bucheimer 04 927 cartridge pouch and M13 Consealer holster are in the S&W photo library.

Very cool, will it take a speed strip?

No this model will not accommodate a speed strip since it's sloted for three sets of two cartridges. The best one I have for that purpose is a Safariland model 70 38-357 cal leather pouch that fits either a 5 or 6 cartridge speed strip. Another option is a nylon Uncle Mikes cartridge pouch with no slots. Bucheimer did make some cartridge pouches with no slots. The Bianchi cartridge pouches I have there are no slots and will work with a speed strip. Found another tan Bucheimer FBI style cartridge pouch, model # 04 127, this one doesn't have any belt slots on the back, the 04 927 has about 1" belt slots on the back.