The Flask is hallmarked on the reverse on the cap, body, and removable cup. The makers mark is J.C.V “John Collard Vickery”. I will attach additional pictures to the disscusion thread since I am only able to post one. I am aware that this particular goods provider had active warrants with multiple royal families and wonder if the flask can be tied to King Edward’s Coronation or the ending of the 2nd Beor war. 

Thank you for your time.