Here is a Nicholson Half Round Bastard Cut file that is 12 1/2" long. This file is in good used condition with apparent little use. There is no damage that I can find and there are not any initials engraved on this tool.
The approximate dimensions are:
1) Overall length 12 1/2"
2) Width at the tip 5/8"
3) Width at end by the brand 7/8"
4) Minimum length of teeth at end by brand 9 1/4"
5) Maximum length of teeth at end by brand 9 3/8"
The shipping weight is 8 ounces. I will be sending this file in a Priority Mail Flat Rate Envelope.