http://cgi.ebay.com/US-SHIP-3-PATRIOTIC-SOLDIER-LETTER-/360349832787?pt=LH_DefaultDomain_0&hash=item53e6861653Description:
Cicil War Patriotic - soldier's letter - with US Ship 3 marking. Franked at upper right by W Zabriski, Major, 9th Ct. I. Vol, and addressed to Miss Jennie Van Houten in Hackensack, NJ. Docketed on the back 1/3/1864. The envelope is somewhat faulty but is still a wonderful combination of elements and might be acceptable until something better comes along.Seller refers to a "soldier's letter", but doesn't mention an actual letter or - if there IS one - what its contents might be.
I'm guessing it's just a cover - a $60 cover.
Update: seller informs me that there is no letter.
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