Miniature 3-Row Concentric

An attractive 19th Century miniature - but difficult to attribute to one of the well-known paperweight makers. Apart from a couple of slipped canes in the first row, the other canes are neatly set around a slightly off-centre pink/white composite cane. The turquoise/white corrugated canes containing blue/white rods and the brown corrugated rods encircling a blue tube centred by a white cog and crimped rod - are well made and complex. Suggestions as to possible makers included, as always, Grenelle and St Mandé (it was, in fact, bought at auction listed as St. Mandé) but those notions were immediately dismissed by knowledgeable French collectors.
The sides curve down steeply to a small polished, concave base. In the centre is a ca. 2mm protrusion - the remains of the pontil - which has been polished to remove sharp edges !