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That doesn't really matter since all the voltages are regulated locally.
Goonies Pirate Coin Display StandView Instructable »
Thanks Joe! But there's not really any more to show, they're just pieces of brass plate shaped and screwed in.
I guess about £5 per pair. The spindle was £3 (https://www.inbrass.co.uk/acatalog/spindles.html) and the other parts cost pennies. The wood I got for free from a tree.