The vast majority of the Chinese keys that are available are from the 1960's and later. Almost all of these are radio keys designed for amateur radio use. It is quite rare to find a key made before the Communist revolution
(Click on the pictures below to see larger versions of the photo)
A British style key marked Eastern Post & Telecom. Has the appearance of an early 1900's keys, but is likely much later.
|Changshu Radio Key||Changshu Type K-7 Radio Key||DJG-K4 Radio Key||Chinese Radio Key|
|Another Chinese Radio Key||Yet Another Chinese Radio Key||Key with Buzzer. National Electric, Shanghai||Key with Buzzer. AMA Electric|