Collection 263/22: Mint and Coinage: Mint and Coinage: Miscellaneaous questions relating to the Bombay Mint. Government of India's scheme for refining silver and the establishment of a refinery.
Collection 263/27: Mint and Coinage: Mint and Coinage: Indian mint silver; Bombay bullion markets resolutions regarding discounts; valuation of silver bullion for paper currency reserve purposes.
Collection 263/29: Mint and Coinage: Mint and Coinage: Silver refinery costs of Bombay mint; Johnson, Matthey and Company Limited also gold content of Indian rupee silver; also size and quality of Bombay refined bars.