British Celtic coin resources.
I realise there aren't many collectors in such a specialist area, but maybe this list will help others to become interested.
Introductory books and web sitesCeltic Coinage in Britain - Philip De Jersey (£5 - 10 secondhand)The perfect 50 page read, with plenty of black and white images.
Best value for colour images:The Tribes & Coins of Celtic Britain - Rainer Pudhill & Clive Eyre (£15-25 new)Good colour pictures, with accompanying descriptions and historical context.
Those two books alone will give you a good overview of Celtic coinage without costing a fortune.
Online introductory materialZero cost, and maybe not quite as relaxing as a good book, but both authors certainly know their stuff:
http://coinproject.com/jan/volume1/...me1-4-2.htmlhttp://www.vanarsdellcelticcoinageo..._1_ccb3.htmland then follow Background -> History (there seems to be no easy way to navigate directly)
For identificationAncient British Coins - Elizabeth Cottam, Philip de Jersey, Chris Rudd (aka 'ABC')The most comprehensive set of British Celtic coin images - good sized images but only in black and white.
Complete with description and rarity. It also had a good introduction, and vital cross-referencing to BMC, VA and Spink.
It's also relatively modern - 2010.
Celtic Coinage of Britain - R. D. van Arsdell (aka 'VA')In tandem with ABC above you should be able to identify nearly all British Celtic coins, and some French/Gaulish ones too. It also covers the problem of forgeries. Van Arsdell also has a website - see below.
Online resources for identificationhttps://finds.org.uk/database/searchCan be tricky to pin down good results, but it's a huge database.
This is maybe a better starting point within the database which allows you to select tribes, rulers, etc:
https://finds.org.uk/database/searc...enumismaticshttp://www.vanarsdellcelticcoinageo..._1_ccb3.htmlThis is the majority of van Arsdell's book online, as far as I can tell - bar the introduction.
There's also a vast number of his articles there too, and more up-to-date details on forgeries.