Need Help Identifying 1936 Hindenburg Olympic Cover

I'm still trying to become facile with the Sieger Zeppelin Post Katalog. The attached cover is very confusing to me. The stamps are cancelled with an 8/1/1936 Berlin Olympic Village postmark, and the cover has two different marks -- Sieger 427B (Rhein-Main airport postmark) and Sieger 428 (Europe-North America flight cachet). There is also an 8/8/1936 arrival backstamp from New York.

I initially thought the catalog identification would be 427Bb -- Rhein-Main postmark with a complete set of the Olympic stamps, but now I'm leaning towards 428D since the cover was transported to New York.

Any thoughts would be very much appreciated.

428D.

The 427 numbers are associated with the Olympic flight of 1 August. While the dates of your Olympic cancels are 1 August, there's no Olympic flight cachet indicating your cover made that flight.

The 428 numbers are associated with the North American flight, which your cover clearly made.

Your cover has the proper combination of marks for a 428D -- the commemorative Olympic cancel, the Rhein-Main airport cancel, and the North American flight cachet.

Note that some versions of Sieger have a typo on this listing. My 22d Edition references 428C in the note under this listing, when it should say 428D. That's the note stating that 428D should have the three markings indicated above.

I should also note, the Rhein-Main airport postmark is shown in Sieger under 427, but it wasn't used only on that flight.

Thanks, Postmaster. Your insight is always appreciated on all things Teutonic! I guess I did pretty well since I got that cover for about 25% of the Sieger catalog value.

Postmaster:

Any idea what the "7495" to the left of the Zeppelin stamp signifies?

It is not a postal marking. My guess is that it would be an inventory number applied by the sender who likely sent out huge numbers of covers on various first flights and perhaps other philatelic issues. Or another possibility is it could be an inventory number applied by a dealer who kept track of his inventory by stamping each cover with a successive number.

Neeskens13, are you able to read the signature top left?

It is "einschreiben" -- German for "registered mail".

Thank you