Scott 529 Offset Printed 3 Cent With Fly Speck Flaw

I couldn't find this fly speck in the bureau book. the odd marking by the lower right 3. Also what state is this sent to?

A.P.O. #717 = Army Post Office 717 (in Tours, France)
Am. E. F. = American Expeditionary Forces

None. The Address is "American Expeditionary Force" and was sent where ever APO 717 was at the time. Likely Tours, France.

Edit: The joys of slow typing, second with now duplicate information.

Wow I wouldn't have come up with that address!

The Encyclopedia mentions that Scott 530 has a version where "9537 -- LL92 -- r. numeral resembles an 8". Otherwise, I also don't see anything for Scott 529.

As to the flaw, I must assume by "the bureau book" that you mean French's "Encyclopedia of Plate Varieties ..."?

One could spend a lifetime collecting the fly-speck varieties on the offset printings AND finding confirming examples to prove a constant variety rather than a fleeting speck of dirt. Any listings will be necessarily representative of the many to be found. Finding unlisted specks is relatively easy, finding the confirming copy is the challenge.

Add: French continued to write monthly about new discoveries in "The United States Specialist" after the publication of his book.