IS it Gold, Dave? Yes, yes, it is gold!! Scrubbed up well, worth a few quid for yer.

On a facebook page near you , Dave Greeves bottle digger Bottle digger, detectorist and fisherman from Stockport  posted (27th November 2017) one of his recent finds, a late Roman crossbow fibula:

Fellow artefact hunters and collectors are ecstatic. Not recognizing what that pircture actually represents, the main topic was about how gold it was, how much money it was worth (including as scrap) and dousing it wit nitric acid would be the best thing to do (!)