It's "rare" because....the headlights are in wrong?

or it's the one 69 RR ever made with a 440?
Granted, this has the Air Grabber hood, which means it was probably a 383 car to begin with, but they did make a 440-6 RR in 1969. They didn't make any 440-4 RR in 69.

In 1969 the 383ci engine was the standard powerplant, and the 426 cubic inch Hemi was the only engine option available for the Road Runner until mid year production. The (A12) 440 cubic inch engine option with three Holley 2 barrel carburetors was added to the lineup at mid-year. Several of the cars were ran in Super Stock Eliminator drag race competitions. As denoted on its fiberglass hood, Dodge marketed its three two-barrel setup as the "440 Six Pack" for the 1969 Super Bee. 440 6-bbl Road Runners had no wheel covers or hubcaps, sporting only "H" stamped steel wheels with chrome lug nuts. It featured an organosol black fiberglass lift-off hood with 4 hood pins and a large functional hood scoop with a red sticker on each side saying "440 6BBL". The scoop sealed to the large air breather. All cars had a Dana 60 rear axle with a 4.10 gear ratio. Production of the 440 6-bbl A12 option Road Runner was approximately 1432.