Martin, if you click on the link and bring up the PDF, there should be an icon somewhere on the top right like a downward arrow above above a "tray" - if you click on this it will download the PDF to a folder that you nominate.
Gouby says this variety (1898Ab) is "scarce ?"
But 1898 Ba and Ca are both "rare"
So, almost certainly No but I doubt that anyone has done a serious analysis.
I have made mention of this being now found on an F15 on my varieties website (without using your images).
Please reassure me that you are happy for me to make reference to it.
Yet another seller trying it on.....
https://www.ebay.co.uk/itm/267031963314?itmmeta=01JAE84Q7N90TDWNDGG4FNXX4A&hash=item3e2c5866b2:g:C~cAAOSwsExnESii&itmprp=enc%3AAQAJAAAA4HoV3kP08IDx%2BKZ9MfhVJKn0kJg003yHYLOxjTi%2F9VJ3XWF4rXPP7M7umpLAzY4NYWkkDPjUBV4B4oim95aa48o05mOInXxyS7KbgNzEgVmxIYLccmqN5rJbdLBIR3s3Pg19RZTDnc99%2FuspL%2BW6ISDSJO4CUJQXnD%2BvG5TAG3CFwzFbVGEgb0RM8Kx0mm%2B2K3A%2FgBlnSqQBSHGl8Rho7kqsk8%2F32TGdPzHKZqnHqTMu2cnoukWaC0q69WoQZ2bQVvC7aKK2AFmDye6tDEyTsY2HxhlqqMtWqGlVCuSndgoR|tkp%3ABk9SR_jzksjTZA
I think there may be something in this because the "fatter face" becomes more obvious with wear and so the queen may have noticed in 1892 that the modified obverse was becoming distinctly less flattering with wear (see example below) and requested a reversion to the original obverse R (Freeman 12).
I think this theory is gaining ground, especially when you compare the modified obverse to the 1895 veiled head obverse:
Modified obverse R
Veiled head obverse
It may be a prototype stage before the final "old head" design.