Auctions

This fine pair of early 18th century flintlock pistols by John Harman of London are part of a collection of firearms and militaria that goes under the hammer at Catherine Southon on September 17 in Chislehurst, south-east London.

You might not like him when he’s angry, but as a stretch toy The Incredible Hulk is evidently very popular with collectors.

The market for Tiffany’s Japonesque style demonstrated its strength at Heritage Auctions (25% buyer’s premium).

Devon saleroom Atkins Auctions is celebrating a house record with the sale of this large and impressive Royal Doulton stoneware dragon vase for £16,000.

Our selection of lots from 12 upcoming auctions

The weird and wonderful brass, bronze and marble clocks produced by French inventor Guilmet take many forms that are all highly collectable

An unexpected assist from the Richard Strauss Institute helped Clarke Auction Gallery (25% buyer’s premium) to hammer down a musical manuscript page for $9500 (£6970) against a guide of $800-1200.

The artist was an intrepid – and rare female – visitor to Welsh deep coal mines to record the final days

The British engineering company formerly known as Guest, Keen and Nettlefolds can trace its origins back to 1759 and the birth of the industrial revolution

A fine George II period bracket clock by Gray and Vulliamy came for sale at Duke’s (25% buyer’s premium) of Dorchester as part of a summer auction.

The horology sale at Dreweatts on September 9 features the Michael Finnemore collection of clocks, barometers, scientific instruments and mechanical music.

An 1858 portrait by Solomon Alexander Hart (1806-81), arguably the most important Jewish painter in England in the 19th century, more than doubled its high estimate in a sale in Clarence, New York.