Thank you very much 180! Your link to your photos helps a lot. The Good News: once I got the T40 security bolt & bracket off, the siren has Bosch & Mercedes "star" on it, and part #'s A 171 820 25 26, & 56038724AB on it. Not sure yet but I think the plug connection is correct also, so I think it will be "plug & play". When it is done (w/windshield) I will update. Interestingly, the box says made in Australia. Thanks again.
Your thumbnail does depict the bracket, so I think the 0469 2034 AB pertains to other Chrysler vehicles that use that bracket with the same siren.