Woodbridge Antiques has dated this piece to the Edwardian era.
There are also maker's marks, for the silversmiths: Gourdel Vales & Co and Lion Passant indicating the finest sterling silver. The case contains an original green half penny stamp!

Condition: This stamp case is in great antique condition. The hinge works perfectly. There are some very minor dents to the silver, commensurate with age and we mention these for accuracy only.
Hallmarks: Birmingham 1902 Maker's Marks: Gourdel Vales & Co
Measurements: 2.3 cm x 2.0 cm approx. Depth: 5.4 mm approx.
Weight: 5.6 grams approx
Woodbridge Antiques has dated this piece to the Edwardian era.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page