Mystery revolver parts .38 SPL

(1) Bag of revolver parts. Unsure of the maker/model, but similar to a S&W K-frame. 

No markings other than what appear to be assembly numbers and grips marked "Rubber Grips". 

Two bags available, both identical and including; 

• Grips
• trigger
• Hammer
• cylinder thumb release
• cylinder + crane
• Side plate
• Top rear sight rib and various pins and screws.