Field work seems to have identified a battlesite (https://www.swissinfo.ch/eng/amateur-archeologist-uncovers-roman-battle-site/47074852?fbclid=IwAR3kfmYmZJcpR1098487XDlVjKWKVW47HmHZVyUCVshnzNBAQ8ADwldEC2w) in SE Switzerland. Dated to approx 15 BC.
More pictures (including a nice lead slingshot) and map in German language report here (https://www.srf.ch/news/schweiz/roemische-artefakte-2000-jahre-altes-kriegsmaterial-in-graubuenden-entdeckt)
nice. The dagger is in really good condition