Which British Coin Is This? (George IV - 1826)

I picked up an 1827 George 1V penny from a dealer's junk box in good F condition, about 15 years ago. The composition is pure copper, which wears more than bronze. 1827's in Unc. bring $ hundreds.

The Brits. pay a lot more for the 1827's than the 1826's, because they were not released for circulation on Great Britain; they all went to the penal colony in Hobart, Tasmania. The mintage, to suit a penal colony's needs, was quite small. They subsequently saw heavy circulation for many years, much more so than the 1826's issued in Great Britain.

Sel, it wasn't so much the heavy circulation that has pushed the price up but the fact that they were shipped in barrels that became contaminated with salt water during the sea voyage resulting in heavy pitting/corrosion on most of the coins. Very few survive in anything better than VF.
A few examples were kept in the UK and there are a couple of virtually mint state examples that appear now and then at auction.