Tracking #s on unopned boxes

well I went through my collection today only to find a number of unopened boxes from the mint. Is there anyway to find out what they are without opening them? I know they are UNC sets, but the year i do not know.

 

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Typically on the cardboard that mint and proof sets are sent is a code. It is right above the middle of the barcode. I just checked some 06 mint sets that I had. It says U06 and that means it is a 2006 Uncirculated Mint Set.

 

cancelled postal mark?

 

You could try matching the shipment number to your order history on the US Mint web site.

 

Why can't you open them (just curious!) ?

 

I think it's because it's more valuble in the US. mint packaging.

 

Know what I do? I put the number into the Ebay coins search and I almost always get a hit. Try it, bet it works for you

 

thanks guys

yes more valuable when you know for sure no one picked through it