Rare Victorian Volunteer Rifles Astrakhan Busby (2nd Afghan War: 1878-80)

A super rare Victorian Volunteer Rifles astrakhan busby likely dating from around the time of the 2nd Afghan War: 1878-80. 

With brass plume holder- detached and found inside the cap. 

Makers label for Wells and Co of Norwich with a Victorian crown, beautifully lined. 

Size marked as 6 1/2 (approx 53cm)