In recent years, this 1949 Jaguar XK120 hasn’t just been stuffed in a glass box for a private owner to peer at. It’s not been relegated to short, Sunday drives either. This Jaguar has been put through its paces on the historic racing circuit at Lime Rock, Louden Raceway and elsewhere around New England. It continues to enjoy the spirit of the race, being put to the test and then carefully maintained after each use. The next lucky owner will be welcome to treat it the same. Under the hood, the XK120 Alloy Roadster sports a 300-horsepower inline six engine. That’s a lot of power for a car of this model year, which speaks to its appeal when it was first introduced. It’s one of 242 of the Alloy Roadster versions produced by Jaguar, and it’s tough to say how many others exist in a condition like this. It’s been refinished in the correct Battleship Grey exterior color with details like a fine leather hood strap and that matches the interior. The interior is pretty swank for a performance car like this. It features a leather and suede upholstery job with bucket seats, a wooden steering wheel and a bold brass logo facing the driver from the steering column. It is as classy as they come, but as powerful as they made ’em back in 1949. The 1949 Jaguar XK120 Alloy Roadster will be available for auction at the RM Auctions Amelia Island event in March. It’s likely to fetch low-to-mid six-figure pricing at auction, a far cry from the $4,000 price tag it had back in ’49…