21 August 2014
Reeman Dansie - militaria auction 28th August
Lot 487 (above) also includes a death plaque. The soldier, 301617 Rifleman William Frederick Tindley of the London Rifle Brigade was killed on 1st July 1916 so you can probably add a 0 to the £100-£150 estimate.
Update 4th September 2014. Hammer price on the above was £620. Add seller's premium of 20% (£124) plus VAT on that (£25) and you get an overall price of £769.