It's a Handley Page O/100. There weren't that many differences between the O/100 and its successor, but the spindly engine nacelle tapering to a point well aft of the wing and the shape of the nose gun position are the most obvious. The O/400's engine nacelles were shorter and nominally did not protrude beyond the wing trailing edge as far as the O/100's. The difference between the two was that the O/400 had more powerful Rolls-Royce Eagles than the O/100, but the external differences other than the nacelles were not many.
I'm adding 3 photos and a link here just to make a connection with a large collection of postcards for sell. It's not ebay but it's the same type of online-marketplace.
A Spad S.VII and Capt. Gynemer:
The next 2 photos show armoured cars by Krupp. The first one has an AA-gun in a turret (the second could be the same though):
This is the site with the military collections:
<p>In good condition for its age - has wear around it which includes wear around the edges, creases, browning / stains and other age wear.</p><p>In between some of the creases there may be small holes due to usage.</p><p>63cm x 58cm</p>
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<p dir="ltr" style="margin-top:0; margin-bottom:0;">The product is a 10x12 photograph of a Junker J1 Edito Service war plane from World War I. It is an original period item from Germany, featuring militaria theme. The photograph captures this military aircraft in action during the historical...
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VI DIVISION BRITISH EXPEDITIONARY FORCE. ORIGINAL XMAS CARD. USED condition w/ a couple of knicks top left/right border on front sleeve, pocking overall.
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