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I was pretty sure the bit about the piece of string as a thrust washer was a dead giveaway
Maybe I should have included the finishing nails used as pins ;)

If you rescale them you should inscribe MK2 into them for mark2 scales ;)

Ding Ding Ding we have a winner :)

I got this WB last week and am impressed with getting one in such good shape and with the original scales to boot!
Not sure what the wood is but it feels very light like Balsa, didnt know they made...