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This graphic
is just a placeholder to show where the numbers were stamped on the whistle.
84 BUCKINGHAM ST
EARLY 1884
Hand made number on the back and inspection mark on the loop.

84 BUCKINGHAM ST
LATE 1884
Hand made number on the back and inspection mark on the loop.

131 BARR ST
1885
Hand made number on the back and inspection mark on the loop.

131 BARR ST
1886/7
Hourglass shaped rolled mouthpiece Stamped numbers under window

131BARR ST
1888 - 1890S
Straight patent under address

13 BARR ST
1890S - 1897
Straight Patent above address or has The Metropolitan Patent stamp

13 BARR ST
1898 - 1900
HasThe Metropolitan Patent stamp

13 BARR ST
1901
May have a thicker concave loop.

13 BARR ST
1902 - 1906
Straight J.Hudson&Co in the address

13 BARR ST
1907
This issue may have run into early 1907

13 BARR ST
1907
Straight patent under the address later 1907

13 BARR ST
1908
Serif on the '1' in 13 and stamped 2 part top

13 BARR ST
LATE 1908
The 1907 address stamp was reused

13 BARR ST
1909
Dot after 13 new cap stamp no patent

13 BARR ST
1910
'Hudsons' was removed from cap stamp

13 BARR ST
1911 - 1913
The dash was removed after the 08

Thisstamp in issue 14 changes to
and a straightstamp in issue 15. Both have the dot after
244.BARR ST
1914
Curved The Metropolitan
Patent stamp

244.BARR ST
1914 - LATE 1910S
Separate straight
Patent stamp

No more dot after the 244 and the pinched loopin issue 16 changes to a round loop
in issue 17.
244 BARR ST
LATE 1910S
No dot after 244
last of pinched loop

244 BARR ST
LATE 1910S - 1922
Round inner loop
onward

The 'E' In POLICEchanges from
in issue 18 to
in issue 19.
244 BARR ST
1923 -
Blank cap no Patent

244 BARR ST
MID 1920S
Shorter middle line in 'E'

The thick underline changes fromin issue 19 to a thinner underline
in issue 20.
244 BARR ST
LATE 1920S
Thin underline in Co

244 BARR ST
LATE 1920S - 1930S
No numbers

BARR ST HOCKLEY
1938/39
Number above window

NO ADDRESS
1940
No address stamp

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