most of the books that discuss this type of table glass - boat vases, fruit bowls, standing bowls, depending on which author you favour - describe these moulded feet being made by the pinchers ............... itinerant workers who appeared to specialize in making small moulded ancillary components of table glass/decanter stoppers etc. G. Bernard Hughes comments............. "It was from the hidden pinchers of Birmingham that the Stourbridge glassmen often obtained square feet with pedestal or domed insteps." Makes you think of something similar to what we might imagine the division of labour to have been in the Bohemian family based cottage industry of the C19.
The word describes the act of pinching a gob of molten glass in a type of long-armed pliers - on the end of which was fixed the two-piece mould.
Certain types of cut decoration on many of these bowls was commonplace - squared diamonds containing hobnails alternating with eight point stars made with crossing mitre cuts - and rims were usually scalloped, with either small/fine or larger scallops as showing here - up market bowls had Van Dyke cut rims, and fan splits as shown here were fairly common.
The similarity of the bowl in the example in Phelps Warren is the limit of the sameness - the stem and foot are entirely different although the example in G. Bernard Hughes is very similar in most respects, including the lemon squeezer foot.
None of which contributes any conclusive proof as to whether this piece is period or a later copy - I find it hard to believe that a c. 1810 standing bowl would be waiting in an antiques centre just for Chris to spot - and the saying that "if it looks too good to be true then it probably is" - comes to mind........ but then Chris is accustomed to me be cynical, pessimistic, and a doubting Thomas - so possibly he half expected me to discount this as a period piece.

There are a great number of pairs of eyes that spend their lives scanning for the real thing, and combined with the apparent perfection of the foot, suggests caution when dating this piece ................. table glass was used as it was intended, and time and accident leave their marks.
C.H. reproduces pages from the London and Birmingham retailer Hill Ouston catalogue from the mid 1930s, and similar shaped standing bowls certainly figure in their repertoire, along with many other reproductions of patterns and designs from the age of exuberance. Their catalogue was filled with designs for 'Reproduction Antique Glassware' including the classic Irish shapes of the turnover edge and the canoe shaped bowl". C. 1900, Richardson also reproduced old designs from George III reign (1760 - 1820).
If only it were that easy to say that shape and cutting alone were all that was necessary to prove a piece was genuine period - unfortunately, it isn't.
Assessing the authenticity of allegedly old clear glass, on the screen alone, was never intended to be easy, and it isn't - but all things considered regret this one doesn't do it for me Chris. But - what a piece of glass - something you can actually use for fruit or punch, or a float bowl, or vegetables at high dinner, or oh, for £3 the list is endless.

By the way, why were you only guessing? did you have your doubts?
