All I can say about the suit of Coins in Celtic Tarot is -- you better have your meanings memorized, because you won't be getting much help from these card images! Having looked at them very closely, I can't say I see much to go on intuitively, or many cues to traditional meanings. Do you?? They're very pleasing to look at, but not much to go on.
In each card you get a golden Celtic knot as the 'coin', surrounded by blue knot work borders. Sometimes this border encircles each coin separately, sometimes in groups or clusters. In most cards, these circle borders are either anchored to the outer border by straight lines, or are interwoven into the outer border, like in knitting. A few of the cards have half-moon 'bites' taken out of the sides, but these do not seem to have any symbolic meaning. All meanings given in the companion book by Helena Patterson follow traditional RWS meanings, but I can't find many hints at them in these cards. Just as well as I have them memorised, then!