There were 2 at different auction houses within the last month or two
Since I was/am not activity searching for a WX11, I am not getting agent notices of such nor am I actively looking.
I was the (a?) underbidder on the Harmer-Schau copy. I was also the underbidder on the CKStamps copy I posted above. It had 9 bidders plus one retracting bidder who retracted a $600.00 bid. The only reason I was the underbidder was the buyer double bid and I just split them. As floortrader notes, I too support the market in certain areas. Mootermutt987, did you not see the CKStamps eBay copy?
Now a "dump" of several of these WX11s is remarkable in a short period. I believe as I noted only one sheet, press sheet was created. However a press sheet produced two panes of 100 images. Still at 200 possible copies as of 1913, it is a difficult item to find. The $1400 catalog would be just a fraction of the catalog price if a real stamp issue and not a cinderella. I have mentioned elsewhere I got interested in the 1913 seal due to them showing up on 1913 (and 1914) covers with parcel post stamps.
The 1913 seal falls into one of my many spending
areas. I have, dealer find requests, actively seeking anywhere I can, bidding to win, bidding to hope to win, then the glancing look category where if I see it I will buy it if I can, buy it if I have never seen such item or last time I saw it was "X" decades ago, buy when I have nothing else needed/good/more important to waste the money on which is what supports the majority of my collection and lastly, something at a price I can make some money upon.
The overpriced dealer holding my check I mentioned above was a dealer request to watch for certain things, that is in the first category above. I have both another check and package crossing in the mails now in the next to last category for 17 covers all with properly paid rates with one or more C46 80 cent Hawaii stamps. I am no Krupnick but but my C46 holding is quite deep, after several decades, as compared to other collectors. It is an area there can be only three (insert your word here) C46 collectors as there are only three recorded completely intact orchid mailing boxes with C46 affixed.
Now I ran on on the above to point out that there are some areas at which the top B&M auction houses don't service well. I have also had some major rarities but those have moved through the hobby via private treaty between collectors. That is where the specialty networks come in.