Obverse:

EDWARD DEI GRA REX ANGL DNS HYB Z AQT. King standing facing in a ship, sword in right hand, shield in left, annulet before Edward, double satire stops, crescent on forecastle.

Reverse:

IHC AVTEM TRANCIENS PER MEDIV ILLORVM IBAT. Floriated cross with lis terminals, lions between with crowns above, all within tressure of eight arches, saltire stops, E in centre.

Good very fine, well centred and very rare, missing from the Doubleday, Schneider, Stewartby and most major collections. Same obverse die as British Museum collection number 1909,1206.1.

Lawrence noted that "The lists also show a small series of nobles of London and Calais with a crescent on the forecastle, a feature likely to be missed if not looked for. This small group is important as it is a direct link with some Post-treaty coins, which are identical except for the addition of the French title. The crescent is probably the privy mark in use just at the time the change took place, June 3 to 11, 1369.”

The purpose of the crescent has been debated and Potter added to Lawrence’s observations in his paper for the Numismatic Chronicle:

"A final problem which might be discussed is the purpose of the crescent on a few dies of all three denominations either at the Tower or Calais. Lawrence commented on p. 201 of his paper: 'The crescent was probably the privy mark in use just at the time the change (from Treaty to post-Treaty) took place, i.e. June 3 to 11, 1369.' He also said (p. 211) 'Coinage at London went on continuously both in gold and silver and at Calais in gold. Many privy marks were therefore necessary and it is unfortunate that the search for these has led to very small results.

Lawrence of course was referring to his theory that all coins had to carry a distinctive mark changed every three months for the Pyx trials, and the comment that his search for them has led to very small results is certainly an understatement. The Tower gold covers a period of eight years, and the Calais gold at least five years, so that 32 marks for the Tower and 20 for Calais are a minimum requirement. Unfortunately, the simple fact is that the crescent is the only additional mark which could by any stretch of imagination be indicative of such a purpose. I have already said many times, when dealing with other periods and metals, that there is no evidence at all that coins were ever marked for three-monthly recognition or that such procedure was ordered.

In any case it would have been practicable only if a system had been employed whereby the dies unworn at the end of any period could have had a supplementary mark added to make them suitable for use in the following period; and there is certainly no evidence of this on any die which I have seen.”

W. J. W. Potter, (1964) “The Gold Coinages of Edward III: Part II. (A) The Treaty Period (1361-9)” The Numismatic Chronicle, Seventh Series, Vol. 4, p. 314.