Pattern issues for British India were typically struck at the Royal Mint in London or the Calcutta Mint, and 1908 falls within a period of active re-evaluation of the fractional anna series — the colonial administration was weighing proposals to replace the existing copper coinage with a lighter, cheaper alternative. White metal patterns from this period represent trial strikes in aluminum or a tin-based alloy, produced to test the visual and mechanical viability of a potential redesign that ultimately did not advance to circulation.
Pattern issues for British India were typically struck at the Royal Mint in London or the Calcutta Mint, and 1908 falls within a period of active re-evaluation of the fractional anna series — the colonial administration was weighing proposals to replace the existing copper coinage with a lighter, cheaper alternative. White metal patterns from this period represent trial strikes in aluminum or a tin-based alloy, produced to test the visual and mechanical viability of a potential redesign that ultimately did not advance to circulation.