The Keys to The Wine Cellar???

In my travels along the garage sale/estate sale paths this summer, I came across these neat heavy old brass keys. I got them from a man who had a ton of gorgeous antiques, but I know nothing about them. He told me that they were keys to vineyard wine cellars, but how do I know that? I thought they were neat, though, and haven't decided to sell them or to group them on a wall. They are heavy brass and have a neat patina, neat coat of arms, too. I think they would be neat on a wall outside of a wine room. Maybe my husband should give one to the owner's of the house he's building. They have a wine room! While I'm at it, I may as well brag about my husband's work. He is a very skilled carpenter, of course I'm very proud of him and the houses he builds. We laugh b/c we actually don't live in a house like the ones he builds, but when he comes home after building these gorgeous houses, he says he likes our home best, because it is a home. Later, when I find his pics of the house he's building now, I'll put up some pics. I have to say, it's nice to be proud of my husband. It's nice that he's a good contractor and people speak highly of his work. I hear people talk about poor contractors and how they have problems with them, and I just thank the Lord that my husband has integrity in his dealing with his customers and with the actual craftsmanship. OK, I've bragged, you'd think I was his mom!