I think I will bubble wrap the 2.5 x2.5's. Then put them inbetween 2 pieces of cardboard in a manilla bubble mailer.
One more thing to think about this holiday. What coint to send in. ASE gold, peace dollars, large cent or some silver pandas?
Just to answer this...if these were my choices I would send bullion, the most expensive I had, in case there were authenticity concerns for future resale. Actually...rethinking that...if I had a variety or VAM that PCGS or NGC won't attribute then that's what I would send in.
its a weird feeling for me, mailing my coins to some company, not expecting them. they could get lost in transport, lost or mixed up in processing. Its just a funny feeling I get when shipping coins.