In taking on this subject you're tackling one of the more controversial topics in the history of ship preservation. There's quite a bit of published literature about it; I'll try to summarize it.
The original U.S.S.
Constellation was one of the first vessels of the newly-created U.S. Navy. She was a 36-gun frigate, launched in 1797. Her biggest moments of glory came during the Quasi-War with France, in which she defeated a couple of larger French vessels. The rest of her career was, largely by luck, unremarkable.
By the 1850s the
Constellation was getting long in the tooth, and congress appropriated a considerable amount of money to repair her. She was hauled out of the water at the Portsmouth, Virginia, Navy Yard and surveyed. The surveyors concluded that her hull was beyond repair. They thereupon scrapped her, and used the money to build a new ship - a modern corvette. The new
Constellation, launched in 1856 (I may be a little off regarding the dates), turned out to be the last sailing warship built for the U.S. Navy. That's the ship that's currently on exhibit in Baltimore.
Unfortunately she became the subject of a long, misguided argument about her provenance. Certain well-meaning Baltimorites spent several decades trying desperately to prove that the ship in their possession was in fact the frigate of 1797; that what had happened in the 1850s was just a major repair job. Howard I. Chapelle, the great historian of naval architecture and curator of transportation at the Smithsonian, blew the whistle. The Smithsonian published a book, entitled
The Constellation Question, in which Chapelle put forth the completely convincing (in my opinion) case that the ship was an 1850s corvette. The Smithsonian allowed one of the Baltimorites, Leon Polland, to contribute a rebuttal in the same volume.
The controversy continued for a good many years, in which the Baltimorites mustered every argument they could think of (up to an including hiring a psychic to talk to a bunch of 1797 ghosts who supposedly were inhabiting the ship's lower decks) to prove they had a 1797 frigate on their hands. Things got downright emotional; I made the mistake of uttering the name "Chapelle" one day on board the ship, and practically got thrown overboard on suspicion of being a Communist. The "restorers" made a series of modifications to her bow, stern, and decks in an attempt to make her look like a 1797 frigate. Even as she became the centerpiece of the Baltimore Inner Harbor redevelopment, she also became the target of much grumpy criticism from naval historians and preservationists. She also was deteriorating at a frightening rate. I remember paying annual visits to the balcony of a nearby building and watching as, over several years, her bow and stern gradually but perceptibly sagged further and further.
Some time in the 1980s two of the Navy Department's historians, Dana Wegner and Colin Ratliffe (I hope I have the names right; I'm working from memory) published an even more convincing book called
Fouled Anchors: The Constellation Question Answered. This one not only reiterated the case for the ship's being an 1850s corvette but went some distance toward explaining just how the argument got started. It seems that somebody affiliated with the Baltimore project literally forged some
Constellation-related documents and inserted them in various repositories around the country. It's one of the more bizarre stories I've ever heard of.
A few years ago the ship's administrators realized that she was in imminent danger of sinking. A considerable amount of money got donated and appropriated to give her a really thorough repair job. She was hauled out of the water and her hull planking was replaced with a sophisticated conglomeration of wood and fiberglass. The last I heard she'd been placed back on public exhibition, but I haven't been to Baltimore since then.
One fortunate by-product of the latest restoration effort was that the administrators who'd claimed she was built in 1797 were persuaded to (as
Wooden Boat magazine put it) fall on their swords. As I understand it the old "1797 frigate" fiction has now been officially abandoned, and the
Constellation is being interpreted as an 1856 corvette - which, in the opinion of just about every reputable naval historian, is what she is. (A few months ago the Naval Institute Press published a new book whose author, as I understand it, tries again to make the "1797 frigate" case. I haven't read the book; frankly I'm so sick of this argument that I have no inclination to do so.)
The bottom line in all this is that, in the process of a well-intentioned "restoration" effort, the people responsible for preserving the ship practically wrecked her. Her appearance has undergone so many changes over the years that it would be difficult, if not impossible, to ascertain what's authentic and what isn't. As I mentioned, I haven't visited her recently; my guess, though, is that the glass-and-laticework over the waist is a modern addition for the purpose of keeping the rain off the maindeck - and the tourists.
So far as I know the only plastic
Constellation kit is a small one that was released by Pyro quite a few years ago. It's quite crude, and hardly worth seeking out. The Artesania Latina kit is one of those hugely expensive continental European monstrosities that bear little resemblance to scale models. (I've expounded on this topic at irritating length elsewhere in this forum; I won't do so again now.)
Both the 1797 and 1856
Constellations are worthy, interesting, and attractive model subjects. I saw an excellent model of the 1797 frigate in the competition at the Mariners' Museum (where I used to work) back in (I think) 1985. There's a book in print about how to build a model of the ship as she looked in the 1970s, but it's something of a curiosity; she doesn't look like that now, and probably never did while she was in active service.
Sorry to be rather discouraging about all this, but building a reasonably accurate model of either
Constellation would be quite a project. The best place to start probably would be the plans of both ships. Howard Chapelle published re-drawn versions of both in his famous book,
The History of the American Sailing Navy, in 1949. I believe a reprint version of that volume is still in print; if not, most good libraries have copies.