2011, February 1, Phil McNulty, Arsenal 2 - 1 Everton, Arsene Wenger's side showed little of the style and fluidity that is their hallmark but this was about digging deep and getting the job done, qualities they demonstrated and that will serve them well as the season reaches its climax.
An official marking made by a trusted party, usually an assay office, on items made of precious metals.
2007. Zerzan, John. Silence.It can highlight our embodiment, a qualitative step away from the hallmark machines that work so resolutely to disembody us.
Full definition of hallmark
Verb
To provide or stamp with a hallmark.
1905, w, w:The Case of Miss Elliott Chapter 2, The cane was undoubtedly of foreign make, for it had a solid silver ferrule at one end, which was not English hall–marked.