Rare? Possibly but is it really worth £129?

I've only recently begun to take an active interest in armorial bookplates; they can usually be found at quite reasonable prices and it's even possible to exchange contemporary bookplates with friends but this one seems, to me at least, to be priced at a rather unrealistic level.



For sale on EBay and marked as a "Rare example of gunuine (sic) 17th century bookplate, probably from Germany, exceptionally rare in this condition, slightly age stained on reverse", try as I might I can't see what it is that might be so rare as to demand a price of £129.99. Admittedly, if it is a genuine 17th century bookplate it will have a certain rarity but 130 quid?

I look forward to seeing if it sells!