Thanks,
As far as i know, the "confirm number" refers to proof of the item being picked up IE delivered. it can be verified online on the USPS website. I've already asked the seller for the the number so i can call the carrier at my end, but unfortunately i have to send 2 or more pm's to get 1 answer.
Some clarification:
I'm in the Netherlands, item was sent from Texas.
It is a member sale, not from any of the Eastern collectors.
I did not negotiated any form of shipment, nor a custom's value or description, never done in the past. I always let it up to the seller. With over 30 trades with unique members it always turned out good, both custom's or otherwise (communication etc). But maybe i should in the future.
Regards,