"Could someone explain to me these Sieber rims. Sieber was located in Switzerland not in Milano, Italy. they went out of business before the sixties. So....what are these rims? Edward Albert"
Here's a possible answer to your question. The daughter of the Swiss Sieber family lived in Milano. Her name was Heide Sieber. She was also known as Mrs. Cino Cinelli.
Michael Allison
New York, NY