There were several varieties of the shilling as follows:- (a) Undated with or without  mark of value (X11); (b)  Dated 1554 or 1555, above the heads and with or without mark of value on the reverse; (c) Dated 1554 or 1555 under the busts. Some coins omit the Neapolitan and Spanish titles, and give the English ones only;
 
The workmanship on the earlier undated coins is superior to some of the later 1554 and 1555 shillings where we find letter punches used on 6d and 4d dies are frequently mixed in with the shilling letter punches. Die sinkers errors occur on the later coins e.g. ADIVTORIVM for ADIVTOREM, POSVIMS for POSVIMVS and NOSTREM for NOSTRVM. Philip brought Spanish die sinkers and mint workers with him but when he left England these workers left with him and were replaced by inexperienced English mint workers who had to adapt to the new style coinage with facing portraits.(Contribution by David H)

  

1554 Sixpence 2nd issue
Same as the preceding, Struck in 1554, 1555 and 1557, with dates above the bust. Those dated 1557 have the Lis mint-mark. The Neapolitan and Spanish titles only occur on those dated 1554.



1554 Sixpence size X 1.5
The quality is an extreme rarity, Beard weak striking 

       
Undated Shilling 5 known specimans all from the same dies.English titles only.

   

  1554 Shiling [countermarked fleur de lis]
UNIQUE
During this period there were export restriction on coinage from England.
International trade required precious metal to be transferred and an
amount of coinage was exported for trading and melting.
This 1554 shilling was acquired from a European collection.
The coin would having been tested for silver to check it was silver on
arrival in Europe and had the FLEUR de LIS stamped twice on the coin
to show that is silver. The British Museum has a specimen with a different
countermark. The coin countermark is possible from Bruge in the Low
Countries an area were Philip was well known. (Contribution by David H)  

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