General info on Silvered Glass (also known as “mercury glass”) from the sale of The Parkington Collection (parts I and II) at Christie’s South Kensington, Oct 1997 and Apr 1998.
The sale included 6 Lots of silvered glass items by Hale Thomson and 20 Lots of silvered glass by Varnish & Co. There were a total of 525 Lots for Part I and 477 for Part II covering glass from the 18th century to modern times.
For Part I, each Varnish & Co. Lot included the wording “impressed disc”. For Part II, the wording was “inset disc”.
Of the Varnish & Co items, colours were Amethyst (3 Lots), Blue (5 Lots), Green (4 Lots), Lime Green (1 Lot), Pink (1 Lot), Red (3 Lots), Ruby (2 Lots) and “Yellow lined” (1 Lot). Most of these were decorated with geometric or floral cutting.
Most of the Varnish & Co. Lots made higher than upper estimate figures for the hammer price. A selection of every 4th Lot across both auctions shows a reasonable example of details and prices:
Part I (approximate hammer price calculated from total price including buyers premium + VAT)
Lot 266 Pink vase 7.5 cm high (3 inch); est. £200-300, hammer price £440
Lot 271 Blue vase 31.5 cm high (12.4 inch); est. £800-1,000, hammer price £2150
Part II (actual hammer price)
Lot 244 Ruby ring stand 13.5 cm high (5.3 inch); est. £200-300, hammer price £450
Lot 248 Green vase 23 cm high (9 inch); est. £500-700, hammer price £850
Lot 252 Amethyst vase 30 cm high (11.8 inch); est. £1,500-2,500, hammer price £3,500
The vase of Part II, Lot 252 was the one to achieve the highest hammer price. Lot 275 in Part I came close at approximately £3,130; this was a Green vase standing 29 cm high (11.4 inch) and included Prince of Wales Feathers in the decoration and was estimated at £1,200-1,400.
Overall, the 20 Varnish & Co. Lots (some being pairs) had a total hammer price of approximately £23,300 against a total high estimate of £14,600.
How those auction results would compare for similar items today is unknown to me. All I know is that when I handled several of those items at the viewing I was surprised at their weight which was much greater than I anticipated. Generally, very fine pieces of glass to have in the hand.