Shame this stem is too far gone.
This is probably a daft idea, but given the vintage, why not polish it and DIY Copper plate it ?
It's done now, just can't get to it for a while yet. It really did need work, Dave at Colour Tech really went to town on it.
@The.Gren started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
Shame this stem is too far gone.