Thanks for sharing, I like that it's the made in U.S.A I looked them up and found this.
https://www.google.com/search?q=is+mercury+adhesives+m300+made+by+the+loctite+corporation&iflsig=ANes7DEAAAAAZdFwus-JVSNW58KlGUDlNJdizKOfMkox#fpstate=ive&vld=cid:42bf5922,vid:zwW6ZxhT8vc,st:0
I thought it was...