1 Stamp from completing my US Airmails through 1950 and of course it's the big $ Zeppelin. I've lost my last 3 or 4 attempts to obtain one through auction simply based on my hoping to get it for a steal.
I've grossly underbid each time and they ended up going for much more than I bid. That being said the options are;
Finish the Mint set with 1 used Stamp ? Slightly cheaper, but not much.
Settle for less than XF ? I've spent a good amount of time making sure all in the collection are XF.
I don't mind hinged but that still isn't in my budget.
Grab the last one on cover ? again, not that much cheaper and I don't think it would display well.
Here are my other 2. Both are NH

