Yeah pewter is super delicate, I'd leave it as is personally. That stuff can crumble apart without much persuasion, and you have your ID, so I'd put it in a lucite cup and call it another KILLER relic! Great find 60, seems there was a good amount of revolutionary activity in your area. Unfortunately not much has come up from that time period around these parts. We did find a Rev war era camp in Lancaster, MA. Unfortunately it was a friend's permission, and I only got to hunt it a few times, but my oldest career copper came from that field, a king William 3. Also some Rev war musket balls, an ammo crate plate, and a bunch of other relics, coins. Congrats and keep up the good hunting!