The bench test controller's (inspector's) personal marks used 1853-1877 were a capital letter with a Crown over. Bruno's book has the controllers and their personal mark listed 1911-1998. The spangled A was Nicolas Woit 1911-1940, and 3 others thereafter.

And here is a nice pic of the post-1924 gauge and chamber length mark inside the 'horseshoe'/Omega


Last edited by revdocdrew; 10/31/07 11:42 AM.
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