Here is an ignition switch, number 126 462 00 93. I googled the part number and it appears to be a 1981 300SD switch, that has since been superseded by several other part numbers. Please check to be sure the number is applicable to your car, as it may fit other years/models too.
I am pretty sure that this is used, or it has had a plug put on it at some point. It came with a pile of NOS MB and VW parts I bought, so who knows. I can not guarantee the actual working condition of it, but I can turn it with a screwdriver to all 3 positions, and it does spring back after it is turned to the ignition position. If you can tell me how to check resistance between terminals at different rotational positions, I can check that and post the results.
I have no idea what this may be worth, so please make an offer. I am completely willing to ship worldwide.
While I am relatively new to this forum, I have thousands of parts sales on a VW site (link provided upon request), and have been on ebay with 100% feedback for 11 years, so I am not a fly by night kinda guy. I ship many items several times a week, and I try my best to ship within 2 business days of receiving payment. I accept paypal or usps money orders. I will be posting some other NOS MB parts this coming week.
Thanks,
Jon