What does C D P D 7 stand for?
there is a comma after the c, so its C, D P D 7 that doesn't answer what it means does it? ---- Cabra, Dublin Postal District 7. ?
9 P. in the S. S. equals 9 planets in the solar system
EDIT: Which is no longer the case, as Pluto has now been classified as a dwarf planet.