On display at the Royal Armouries, Leeds. Photographed by Gaius Cornelius on 08-Jun-06. Legend reads:

Scale coat

Indian, Rajasthan, early 19th century

This coat has been covered with the scales of the pangolin or scaly anteater (Manis crassicaudata). The scales have been decorated in gold, and the larger have been used where more protection is required. This is the only known example of this type of armour. It originally had a helmet, also made of pangolin scales, with three plumes.

The scale coat was presented to the King George III in 1820 by Francis Rawdon, 1st Marquis of Hastinges (1754-1826), who was the East India Company's Governor General in Bengal, 1812-22.

RCIN 71613 doesn't appear to be the only one as the royal family also has https://www.rct.uk/collection/search#/2/collection/38059/coat-of-scale-armour