After a great deal of searching found a scan of a newspaper, The Teesdale Mercury August 11, 1880:
ARTHUR SPEAK,
AUCTIONEER AND APPRAISER ,
BISHOP AUCKLAND.
SALES undertaken at any distance; no additional
expense.
(Second column, about half way down under the George Moore advert)
Possibly the same Arthur Speak?
http://46.32.255.219/pdf/1880/August-11/August-11-1880-08.pdf
Or this one, October 16 1879, second column, second from top.
http://46.32.255.219/pdf/1879/October-15/October-15-1879-04.pdf
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I'm not an expert in any kind of coins, but I reckon I'm good at research and will do my best to help. Feel free to tell me my identifications/valuations/gradings are wrong. It's the only way I'll learn.