This is a venture to see if any link can be found between hammer numbers, hammer number fonts, and breech block types. I am not a font expert. I have grouped these from what I can tell are similiarities in font design.
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Font “A”(2)
There are only two Needhams in this site that have this oversize “4” The other two numbers match other fonts on this page.
Large “4” no serifs
#146
#486
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Font “B”(23)
#2
#9
#28
#39
#48
#113
#293
#356
#377
#393
#421
#425
#505
#580
#583
#649
#687
#823
#827
#843
#942
#957
#1455
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Font “C”(13)
“2” and “4” has serif
#23
#104
#132
#213
#258
#267
#286
#287
#444
#447
#448
#452
#486
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Font “D”(5)
#18
#100
#146
#231
#374
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Font “E”(1)
#110
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Font “F”(8)
#11
#105
#130(Double struck)
#150
#161
#1090
#1160
#1181
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Font “G”(1)
#110B
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