Now that's a very interesting discussion. What do you make of this catalogue footnote to the sale of an 1874H penny by DNW in 2006: FootnotePeriodically, the Heaton mint struck carefully finished ‘specimen’ coins of varying denominations as an example of what the company could produce; in some instances they were presented as gifts to dignitaries and government officials and in other cases were part of the travelling portfolio of a Heaton sales representative (cf. Gunstone, SNC December 1977, p.545; cf. Tansley Collection, DNW 67, lot 369). Truly genuine Heaton mint proofs of this period (cf. Adams lot 268 = SNC April 2005, 2467) are exceedingly rare; most of those so catalogued in the Freeman sale were in fact ‘specimens’ That's fascinating. Presumably though, such specimens had the H mintmark? None of the bronze minted 1860-3 by either Watt & Co or Heatons had a mintmark Also don't forget Heatons were producing coins for lots of countries, so the "specimens" could have been a cosmepolitan lot, not all these issues had mintmarks