Antique 16S Philadelphia Masonic Open Face Pocket Watch Case Gold Filled USA. Item: Pocket Watch Case Brand: Philadelphia Model: Masonic Case Material: Gold Filled Country: USA Gender: Unisex. Inside Diameter: 43.5mm Outside Diameter: 50mm. Ok, overall condition for its age. There is discoloration and scratches on the case. There are scratches on the crystal. The crown is worn.