Michael's book is on Ebay right now
https://www.ebay.co.uk/itm/156516874402?itmmeta=01JCNQKJ3XCC0WDJV61ZQSBTBV&hash=item247121f8a2:g:t6QAAOSwvLlnNgnY&itmprp=enc%3AAQAJAAAAwHoV3kP08IDx%2BKZ9MfhVJKlZl2vPDZSYJdNrdHO4ptyX27Wa4scxEN0dsIwJwzOynWOwqOsrOznmr5fAl0J9AdKZwRSogkMxpOhLP8Osp6NGGiq%2BnG8gU0C4lfmS6pOYhhXlcPzXmJoeUYm3oA5Ktgy%2BN9E2imUC6hZQ02rHsJnXSOOgblqqmLOfKWSzFCEEbhcRlW3Miwpqh7hn%2F9VSAIOxZPXPGM8X7lkt9QJM3CM6VUCyx%2FhUE9IXPpzmJ0nesg%3D%3D|tkp%3ABk9SR4iizrflZA
https://www.ebay.co.uk/itm/226437775494?itmmeta=01JC412AHD64NT4Q9PZPE5KWC2&hash=item34b8be4086:g:~sIAAOSwQdtnKK2q&itmprp=enc%3AAQAJAAAA4HoV3kP08IDx%2BKZ9MfhVJKk%2BkBBkc3ul2x4UIcz6%2BEca4cQ9fvtdHZY%2B3af1y5VLXpKr8krKtMEPfFfk4Ya7noZxpvrEMj1%2FS2AngRyhB66EtoguWmTpUTdvXVNGU%2BWCwjYeesXqv%2F4gPyVViI3LuFoRRO6BaPNza%2B7XLdCWJRjnq6w8yg8qOvGFRY4ZLEt2pLw4Hd6GbaTUwn3xZz47IHPm0TdCf1M2EA5MGHB1tfXDJrOaoJ77rqtmSSVO9cij--0lFdiftXyXC4q6b%2FjorrgurAG3JFo2qvJW7IXzLTFt|tkp%3ABk9SR-SoiYHhZA
I'm hoping he'll accept my offer of £4500.
I've just checked and it appears that they have taken the photos either from my website or the Royal Mint Museum as it's clearly the same coin !
https://rarestpennies.wordpress.com/1933-f786-pattern/
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.