Henry VIII. 1509-1547. AR Penny (0.64 gm, 2h). Canterbury mint. Posthumous coinage, 1547-1551. 

ROSA SINE SPIN, crowned facing bust.
CIVITAS CANTOR (over LONDON), coat-of-arms surmounted by cross fourchée. 

North 1887; SCBC 2417.

Apparently a London signed reverse die was sent to Canterbury, 
where the mintmark was re-worked to the proper reading.

Used by permission of CNG, www.cngcoins.com 
Triton VIII, Lot: 1777. Jan 2005.