I’m not sure if you have the following facts. I apologise for wasting your time if you already do.
I was a serving police officer from 1974 to 1999, and, during this time the force had, as part of it’s uniform issue, a V neck guernsey, made by Guernsey Woollens. They were black, and, the reason for the V neck was so that you could see the tie! From a distance the garment looked like a jacket! The police crest and name was engraved on the left breast. Upon my retirement, I requested to keep mine, because it was going to be discarded, on condition I removed the name and badge, which I duly did, and still wear it to this day. It will see me out!