Vintage SG Brown Flameproof Spark Morse Code Telegraph Key - Aviation Key

Description

Vintage SG Brown Flameproof Spark Morse Code Telegraph Key - Aviation Key
Markings:
S.G. Brown Ltd.
London. W.
REF. No. 1969
Approximate Year of Manufacture: 1912
More than likely used in Aircraft during World War I and the early part of World War II.
Spark window on the cover.
Condition:
This item is used and shows signs of use and wear.  See photos for condition.  This item has not been tested and is being sold as is.