1867 10d red-brown (plate 1)

[NBHRH2]

Hello - I'm new to the group and recently re-started philately after a 50+ year break. I am in a steep learning mode so hopefully this is the right place to post this question.

My current focus is GB 1840-1951, and one of the gaps I have is SG99 (1867 10d red-brown). According to Gibbons this is valued at £55,000 (!) but from what I can tell virtually no one pays Gibbons prices.

What would a more realistic price be for even just a fair quality item? Note, I am not even remotely close to affording the Gibbons price so this gap may have to stay as a gap.

Thank you for any guidance you can offer.

[AB1961]

Hi NBHRH2
The stamp you are looking for is available for purchase. The web site is
www.mercator.direct. The price has been reduced twice, eventually to £2,100.
I do not know the seller or agent. I also don't know why there appears to be no bids
Please be wary because it is a very rare stamp, only eleven known copies used.I don't know how many have survived
If this is genuine, why hasn't there been any bids, Especially at a greatly reduced price?

[NBHRH2]

Hi AB1961,
Thank you very much! Is it fair to assume that the watermark would be the best guarantee of authenticity or are there other indicators to look for you know of?

[AB1961]

Hi NBH RH2
I agree that the correct watermark is helpful but not absolute proof of authenticity. The GBPS surface printed consultant may know more . There is a managing director of a auction house who is a provenance researcher but I don't know if I'm allowed to provide you with his contact details. I could make more enquiries.
I would have thought that a stamp of this rarity should have a checkable history . I would want to know it's pedigree. I would also expect many bidders and watchers.

[NBHRH2]

Hi AB1961,

Again, thank you very much for the guidance. Much appreciated.