A big French Ramsden electricity machine by Ducretet with an Henley electrometer. 4

Another view of the Ramsden. 4

Another Ramsden electricity machine (British style). 3

An American double pen register by E.S.Greeley. 2

A special GPO relay. 1

One of the very first telephone (butterstamp) by Siemens & Halske, Berlin 1878. Observe the calling whistle. 3

Another view of the S & H butterstamp. 3

A detailed view of the S & H butterstamp. 3

A typical S & H (Germany) key in very nice condition. 1

A signal bell used by the railways in England GAMEWELL. 1

A sounder by Bunnell. 1

A sounder by Siemens Brothers (London) and one by the GPO (England). 3

Three sounders: Siemens Brothers, Bunnell and GPO. 3-2

An Edison stock ticker on a support with feet. 3-2

The Edison stock ticker without the base (also the round base can be used). 3

The Edison stock ticker without the base, the other side. 3