Legally you as a non FFL are not required to have nor present a copy of the FFL license of the business to which you are sending the firearm to.
Again, the clerk behind the counter may see it otherwise, and having the copy sure helps.
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This answers alot of common questions...Scroll down to- Part B 'Unlicensed Persons'
http://www.atf.gov/firearms/faq/faq2.htm#a29