Robj made this type of lamp , model called "lamp Iris" in lots of different variations and sizes. The shop resold Robj pieces during the interbellum advertising it as'The purest art mixed with the most Parisian phantasy'. Of which the smallest 42 cm one with a common size Daum shade is shown in their catalog. The rarer medium sized one of 55 cm as was as the large one with a height of 105 cm were offered with special made oversized Muller shades.
The Iris lamp on offer is the medium one and has a height of 54,8 cm (21,6). The Muller shade has a diameter of 14,8 cm (5,8 inches). It is in very good condition.
As you can see on the pictures there is a small damage or moulding irregularity on the inside of the shade. It is not a chip, there is no glass missing. The lamp is wired with an American candelabra base socket and 2-prong plug.
For European countries I will place a E14 socket. ROBJ was an anagram of Jean Born the founder of the company in 1908.
Late 20s Robj opened a second shop at 32 rue de Paradis which later moved to number 51 in the same street. The company commissioned many young designers to design items for their shop.Jean Born died in a car crash in 1922 after which Willemetz continued the company on his own. In the 20s Robj was very popular and a commercial success.
Nowadays especialy Robj insence burners and table lamps are sought after collectibles. Check out over 300 other French art deco lamps in my shop. Art deco lamps made in France were equiped with B22 bayonet sockets. For most countries like Europe or the US such sockets are practicaly impossible to use.For instance in the States 110 volt bulbs with B22 fitters are obscure, very hard to find and only one model bulb in very limited wattages is available. In spite of what sellers of unrestored pieces of poor quality claim in their ads when they offer lamps with bayonet caps sockets : except for the UK and Australia French chandeliers and lamps need to be rewired for your country. In order to fit Edison large or small screw base bulbs as used in the USA, B22 sockets have to be replaced by American candelabra base or standard/medium size Edison screw-in sockets. E14 and E27 are modern replacements for European countries. An additional complication is that the size thread used in early French lighting to connect the sockets to the chandelier mountings or lamp bases is not compatible with the modern size threads used in the USA and Europe. New American or European sockets do not just screw on to the old lamp fixtures. In order to make it possible to use an original old French chandelier or lamp with modern screw bulb bases, a specialized restorer will have to re-tap the threads. All my cleaned and restored chandeliers, sconces and lamps come rewired with the correct sockets you will need to use modern bulbs in your country. The item "ROBJ & MULLER FRERES RARE FRENCH 1925 ART DECO LAMP. France 1930" is in sale since Thursday, October 29, 2020. This item is in the category "Antiques\Architectural & Garden\Chandeliers, Sconces & Lighting Fixtures". The seller is "paravas" and is located in Rotterdam. This item can be shipped worldwide.