1 Crown - Elizabeth II Tynwald, Platinum Proof

The 1979 Tynwald Millennium crown commemorates a thousand years of the Manx parliament — one of the oldest continuous legislative assemblies in the world, with its origins traced to a Viking-era gathering held on Tynwald Hill in 979 AD. The Isle of Man's Pobjoy Mint produced this issue across multiple metal variants, with platinum sitting at the top of a deliberately tiered collector hierarchy that also included gold and silver proofs.

At 52 grams in .950 platinum, the production run was almost certainly in the low double digits. No widely published mintage figure exists for this variant specifically.