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Even though manufacturer's numbers are usually associated with more 'modern' silver - used from about the middle of the 19th century - an early predecessor existed. Penzer calls these 'order number of Storr & Mortimer' (note 9), 'pattern number or job number' (note 10) is probably a more apt description.
Many, but not all, Storr silver pieces have three-digit numbers stamped in, which could not have been inventory numbers. Variations and inconsistencies are many, for example only three of a set of 4 wine coolers are stamped 887, a dinner service made for Sir Thomas Picton, 1814, is marked 167 on 2 meat dishes and covers, a large meat dish, two rectangular dishes and covers.
Occasionally there is a third number, representing a decoration design number.
An example of this kind of numbering is found on handmade Tiffany Lap Over Edge dessert forks and spoons, on the back of the spoon stamped with 356=pattern number, 1089=decoration number and 3579=order number.
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Most collectors are familiar with termini technici like scratch weight, British registration mark, etc.
Yet the matching soup tureen and stand is not marked with this number.