That is a neat motorcycle!
I know next to nothing about the colors used on a 1983 Indian Military motorcycle but I find it interesting that it is almost a "Desert Storm" tan color.
The interesting part comes from the fact that the Indian Government prohibits Royal Enfield from selling the Olive Green "Military" color in India because it is the same color that the Indian Military is using on their motorcycles. At least that's what I've been told.
The new "Desert Storm" tan Royal Enfields are all the rage now over there and if this 1983 model color is representative of what their military used back then it would appear they have gone full circle.
Perhaps I'm wrong but I suspect that any 1983 Royal Enfield in the USA is both unique and rare. I don't believe anyone was importing RE's to this country then.
As to whether this adds to its monetary value, that is another subject.
A collector of foreign military equipment might be interested in it so they might be willing to spend more for it?
I don't think the motorcycles journeys from India to Mexico to Florida would add much value although that sort of history is always interesting to any buyer.
Thank you for showing your bike.