Thanks for posting the extra pics! Yes, your police trike is in much better condition than the one I was bidding on. That's why I didn't want to go very high on the bidding. On that tricycle site I mentioned, if you go to the Garton mfr page, you'll see a color ad for the 1953 police trike and see all the equipment which came with it. I see yours still has the braket where the red lens headlight was attached. I got that ad from someone years ago and sent a copy to tricyclefetish to post on their Garton page. I'd love to find one still equipped with windshield, headlight, siren and antenna. I'm trying to hold out for a 1953 model, although I know that cuts my already slim chances of finding one at all in half. If you do decide to sell it one day I certainly would give buying it some consideration.
Hope you can get some more info on your antique trike. I did see a seat and post that would fit it on ebay some months back. It was in pretty good shape, but I don't think it sold since you really need an antique trike like this to fit it on due to it's design. Maybe it will be relisted sometime in the future.
Dave