You could better have the Summar coated. In fact Leitz found after the war in their warehouses many new Summars that were uncoated. They decided to coat them and to sell hem. Therefore many coated Summars exist that look very new. They are great lenses.
The Elmar 35mm f/3.5 is uncoated very good if the glass is clean and unscratched. Coated and clean they are great too, of course. A hugely underestimated lens.