I send almost everything registered priority mail to all the collectors in the USA which have purchased jetons&plaques from me. ALL arrived safely !!! From Belgium to anywhere in the USA for about $8 (depending of weight). It mostly takes about a week to cross the pond. I use regular bubble envelopes (tried the Belgian postoffices envelopes for a while but the where a $1 each and the regular one are only 25cents).
Everybody which has send me registered mail from the USA it takes about a week. Only once, 2 collectors send me registered envelopes ones, both from California and they took a month !! to get here. I guess they where not put in the priority section, it took time but they did arrive. With registered mail they can trace your sending.
Thats my opinion,
Kind regards
Bob R-4479 Belgium