WURTTEMBERG-Entire (1896) Electricity house. Views of Stuttgart. Postal card (O) with color illustrations. (ImageA)

U.S.A.-Meter cancel (1935) Electrical company mascot 'Elec MacElec'. Red specimen meter cancellation on cover Pitney Bowes No 01232: 'Let the thrifty Elec MacElec save money for you!' Specimens were given to advertisers. Only a few were printed. Rare! (ImageA)

U.S.A.-Meter cancel (1937) Finger* touching electric switch. Red meter cancellation on envelope front Pitney Bowes No 01641: 'Switch to Electric Cooking.' (ImageA)

U.S.A.-Meter cancel (1940) Reddy Kilowatt. Red meter cancellation on piece Pitney Bowes No 55776: 'Guard precious sight with proper light. Reddy Kilowatt, your electrical servant.' (ImageA)

ETATS UNIS-Meter cancel (1943) Electricité. Empreinte rouge de machine à affranchir sur pli Pitney Bowes No 96623: 'Chauffez l'eau électriquement. Pratique. Sûr. Economique.' (ImageA)

U.S.A.-Meter cancel (1946) Electrical towers* and wiring* throughout map of North and South Carolina. Nicely detailed red meter cancellation on piece Pitney Bowes No 57509: 'The Piedmont Carolinas offer industrial opportunities.' (ImageA)

U.S.A.-Meter cancel (1949) Electric stairway. Violet meter cancellation on piece Pitney Bowes No 123267: 'New Oakland Main Office. Electric stairways for your convenience.' Unusual aspect of topic! (ImageA)

U.S.A.-Meter cancel (1950) Electric bed. Red meter cancellation on piece Commercial Controls Corporation No 9839: 'The Camp Bell Bed, electrically operated.' (ImageA)

U.S.A.-Entire (1950) Garage mechanic* inspecting battery. Automobile. One cent postal card (N) with advertising. 'Firestone Tire and Rubber Company.' (ImageA)

AUSTRIA-Proof (2019) Victor Kaplan. Turbine. Black print. (ImageA)