Can anyone explain the difference in the dials on the 1956-redialed MoD Omegas? I have attached a couple of pics. All appear to be original but from my understanding they we all redialed by the same company in 1956. So why the difference in the dials? The font for the numbers seem to differ a great deal. Look at no "4" ex. Are they all genuine? Thx for any help.