This cap badge and band are the 1918 issue with crown, eagle and laurel wreath in silver, gold plated on woolen melton with metal backing, J.R.Gaunt & Son Ltd metal maker's mark.  Two whipcord ‘slip over’ shoulder epaulets, each with a brass ‘Canada’ nationality title and two officer’s ‘pips’, (lieutenant), with red enamel on the annulus, are shown below.  This insignia belongs to Canadian pilot Lieutenant C.A. Mitchell, known as Albert Mitchell.  Mitchell was briefly assigned to No. 43 Squadron in France and is not to be confused with another, long-standing pilot in that squadron by the same last name. The photograph of him below was taken in February, 1918.  This photo and accoutrements are illustrated on page 33 of Eagles Recalled by Warren Carroll, 1979, Schiffer Publishing.   Mitchell's service record from the Public Record Office in Kew, London, is transcribed and can be seen by clicking here. 

Mitchell piloted Camel D.1814 which he crash landed on 17 April 1918 per The Camel File p 113.

While the Aeroconservancy regrettably does not own Mitchell's RFC wing (upper right photo), we created an inverted image of it (middle photo) and compared that to an enlargement of the wing Mitchell is wearing in the above photograph; they are one and the same.

Clifford Presley wrote to me that Mitchell died in approximately 1983 and was living in Vancouver, British Columbia, Canada.