I have mailed to Canada, Great Britain, Scotland, Portugal, Spain, Italy, Austria, Germany, Latvia, Russia, Netherlands, Australia, New Zealand and Uruguay. I did mail a single token to India but the package looked like a letter and it did arrive.
Packages I sent that got lost have been one to Great Britain.
Packages that got lost coming to me from Canada, Germany and the Netherlands.
I did get one from Italy that took two months and one that went to Brazil from Florida but it came to Texas eventually. Never understood that route.
I am sure I have lost other packages but those come to mind.
Every package I sent to Portgual was intercepted by Customs and I had to mail detailed lists and values and my friend there wound up paying duty. That was the end of those trades after 4 times.
Most of the coins I trade aren't worth much...postage going up will sure put a crimp in that activity.
Dale