GERMANY (1966) Electric pile*. Photo essay (See Note) of unaccepted design for 100th anniversary of discovery of electrodynamic principle by Werner Siemens. Scott No 966, Yvert No 379.
AVAILABLE AT $60
GERMANY (1972) Defective plug*. Photo essay (See Note) of unaccepted design for accident prevention series. Scott No 1079, Yvert No 575.
AVAILABLE AT $60
GERMANY (Berlin) (1972) Defective plug*. Photo essay (See Note) of unaccepted design for accident prevention series. Scott No 9N321, Yvert No 395.
AVAILABLE AT $60
AUSTRIA (2013) Electric ship. Electric rail*. Black print of SS. 100th anniversary of Star & Hafferl.
AVAILABLE AT $25
LIBERIA (1980) Hydro-electric plant. Imperforate proof mounted on Format International Security Printers card. Scott No 756, Yvert No 879.
AVAILABLE AT $60
AUSTRIA (2019) Victor Kaplan. Turbine. Black print.
AVAILABLE AT $15
AUSTRIA (1972) Power stations & lines*. Set of 3 black prints. Scott Nos 923-5, Yvert Nos 1218-20. 25 years of Power Industry.
AVAILABLE AT $40