It sparked my curiosity as well Saun,I did some research & came up with zip,however it is resaon enough for suspicion as Heuer craftsmanship as we know it led you & I to believe these are knockoffs ,because of the cut face!...Perhaps a fax to the ole boys @ Heuer would reveal an absolute answer.
later...dom

: I've now found evidence of another of these (so that makes three) -
: they're all 2447D's, first execution dial & hands, black
: Decimal track, and the "50" marker cut in half.

: This makes me think it was a genuine model, but MOAT doesn't show a
: first-execution 2447D with black track...