Silver Mist on the Ludwig Standards almost always evenly fades to that exact color (often such drums are listed for sale as being Champagne Sparkle, which wasn't available on Standards). I think that is what you have there and the rail and other classic hardware was either special ordered or added later. My money would be on a special order since the bass drum lacks evidence of having the center post mount. These were made in the Chicago plant alongside the regular Ludwigs so getting a rail and spurs installed wouldn't have been a big deal if the customer or dealer were insistent.
I have a piece of this same wrap that came off a damaged snare drum, It is evenly faded to that exact color but still has hints of the original silver in the areas that were under the lugs. I'm not sure why they faded like this but they often did.
Early Standards had the white reso-coat interiors for the first year or so before switching over to the gray Granitone style paint. White interiors would be consistent with the low serial number shown on the badge. I think that is a silver (nickel plate, not aluminum) grommet there as well but with just enough tarnish to it to make it look brass in the photo.
The drums are original Silver Mist standards and all the details look to be correct. The upgraded hardware is a question mark but certainly not out of the question for the factory to have done that upon a special request.