Hamilton Electric Box Early 505 Style CASE MATERIAL_Gold Filled and Swiss-T LIC ATO below

and Swiss-T  LIC ATO below the 6 position

with great uniform patina

but alleviated the need for a separate depth gauge during dives

likely due to patent infringement issues with the LeCoultre "Reverso" which was introduced in 1931

It is similar to the RR Special 51 with the exception of the narrow case ring to allow full view of the movement

Hamilton Electric Box Early 505 Style CASE MATERIAL_Gold Filled and Swiss-T LIC ATO belowOffered is this correct box for Hamilton Electrics made just after the release of the 505 in 1961. They simply added the 505 sticker until boxes printed with 505 could be made. It also has a "Weatherproof" sticker meaning it was sold with one of Hamilton's Nautilus series watches, Sea Lectric II, Saturn, or other weatherproof watch of that era. It is in great condition and would look great with your watch. Guaranteed to arrive in fine working order,