Hi Debbie. I'm Cindy. You should be OK to clean the window with glass cleaner like Windex. Cleaning it should not affect the patina. If you're worried about the patina, you could always apply a spray sealant. Good luck Debbie and Happy Holidays.
Every time I clean my mirrors, they end up having tons of streaks and almost look worse than before I started. What could I use to clean them that won't leave streaks...
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Hi Debbie, Here's a link that may help: https://missmustardseed.com/cleaning-sealing-chipping-antique-pieces/
Good luck!
Hi Debbie. I'm Cindy. You should be OK to clean the window with glass cleaner like Windex. Cleaning it should not affect the patina. If you're worried about the patina, you could always apply a spray sealant. Good luck Debbie and Happy Holidays.