An English Civil War Troopers Three-Barred Lobster Tailed Pot. With hand forged two-piece skull and low turned comb, three-bar face guard joined at the bottom to form a blunt point, bluntly pointed neck-guard of three simulated lames with a turned border, with triangular cheek pieces. 

External Marks: 

IR (possibly) struck on the peak. John Rivett was apprenticed ro Richard Seawell for 9 years and was made free on 15 January 1615/16 and recorded his mark, which is also known as ‘ii or IR’ at the end of the 1619 list in Guildhall 12085. John Rivett ‘the son of John citizen and armourer of London’ was apprenticed to his father for 7 years from 25 March 1637 and was made free on 1 April 1645. 

Internal Marks: 

Struck with construction marks under the peak and on the neck, 

Thom Richardson (2004) The London Armourers Of The 17th Century, Henry Ling Ltd, Dorset Press, UK.