The letters DA/ETR/TRIA stand for the Netherlands city Deventer. You may wish to scroll down to near the bottom of the page referenced below to "REC 44" and see the non-variant form of your coin. Looking at the various variations, I thought either Variant DaIII or AaI came the closest--straight legged eagle. https://translate.google.com/translate?hl=en&sl=nl&u=http://www.duiten.nl/reckheim.html&prev=search
Don......
"Nederlands: Koperen duit (1663) van Rekem.
Nabootsing van duit uit hetzelfde jaar van de stad Deventer.
Het opschrift vermeldt DA-ETR-TRIA in plaats van DA-VEN-TRIA".