To clarify my statement about buying the cheapest locks on eBay, I'm buying used OEM parts, not cheap aftermarket as the aftermarket wafers and springs may not be interchangeable at all. I don't really care what the outside of the lock looks like so trashed and rusty is fine for what I'm after and tends to be less expensive. What you do have to keep an eye out for is that what you are buying matches what you have. There are standard wafers, 2 track wafers and 4 track wafers.

Michael

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Usta haves '69 250/8, '76 280C, 1971 250C 114.023, 1976 450SEL 116.033
Current have, 1983 300SD 126.120