The dials of this period could have different writings: LUMINOR PANERAI, MARINA MILITARE, or both.
Not only did the Marina Militare Italiana use Panerai, but in the first half of the 50’s, Egypt requested a special supply of watches.
Panerai created the ref. 6154, similar to the 6152 but thinner and with an inferior impermeability 10 atm/100mt, this uses only the Rolex movement.
Approximately 30 examples were produced, collectors re-baptized them as the little Egyptian.
In 1956, the Egyptian Navy once again requested another supply from Panerai with higher waterproof specifications and the use of the crown protecting bridge and with the addition of a revolving bezel with 5 minute intervals (patented) for calculating immersion times, the back was closed with antimagnetic screws produced by Panerai, the caliber was the Angelus 240 8 day winding charge. So was born the ref GPF 2/56, about 60 examples were produced including the prototypes and the 50 assigned to the Egyptian Navy.