The Alfaholics wheels are made for them in the UK by Creasey castings www.creasey-castings.co.uk/ I have a pair of 8x15" - they are extremely well made and are based on the early first series Campy coffins (having a bead on the rim)
The black treatment is "chromate" which is the best way to protect the magnesium prior to powder coating.
David
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