Birmingham Dates - Z

	1797*^†
	1823
	1848*
	1874*
	1899*
	1924
	1949
	1974
Millenium mark sometimes also used	1999
	2024

* = multiple images

^† A doubled duty mark was used for a short period during the Y and Z date letter periods in 1797 to signify the doubling of duty on silver