Hi and best greetings from Bielefeld/Germany. My English is very poor, please excuse me for this and be patience with me. Thanks! I'm a new member here and i'm searching a little part for my old Omega "Ambassador" 2421/1-H. It is the ring that holds the caseback onto the case. I know it will be difficult to find this little part. If anyone here in the forum can help or has any information, how to get the ring, i will be very happy and makes me glad. Here are some pictures of the watch... Thank you for help and best regards from me... Jörg from Bielefeld/Germany
The part is discontinued, but the part number might help your search - 082ST2374F - case back maintaining ring.