a LUMEX - LDD-HTF304NI - DISPLAY, 7 SEGMENT, RED, 7.62MM.
it has 7 segment lines common to both dispays (no DP) and 2 common cathode lines, giving 9 lines.
google in that direction and see how you go.
no doubt 2 of your 12 pins are either N/C or connected to other pins.
hope this helps