Watch List notes:

The Hardcastle Collection | PROOF 62 CAMEO ~ [Top Pop] | British East India Company, Madras Presidency, Proof 20-Cash, 1808, in gilt copper, Soho, Arms of the East India Company, date below, rev. Persian legend, XX. CASH in exergue, 10.88g, 6h (Stevens 5.117 var; Pridmore 195 var), brilliant, good extremely fine and an unusual weight between the Heavy and Light issues, in NGC holder, graded PF62 CAMEO (Cert. #5878623-015) [*Single Finest*].
https://www.ngccoin.com/certlookup/5878623-015/62/
Estimate: £400 - £600