I would also vote on the vinegar, just from previous experience. Insurance co. have gotten very persnickity as to what they cover anymore. My sewing area is in my basement, however my policy specifies that only the furnace, water heater, stuff like that is covered. I had to get an endorsement to cover my quilting stuff, including my machines. Of course, it cost extra for the endorsement. I would highly recommend contacting the Insurance co. to find out about your antique items.