Unfortunately I don't have any examples at hand right now. What I remember is that in some smaller villages in germany it was missing house numbers and some streets weren't "cut" correctly. So when you had an intersection of Street A and Street B and after the intersection it becomes Street A, sometimes OSM would still name it Street B and therefore all numbers are wrong. This was around 2 years ago so maybe the map data is better now.
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I'm also thinking of trying to set this up. Can you give a specific example? Are these common house numbers?
Unfortunately I don't have any examples at hand right now. What I remember is that in some smaller villages in germany it was missing house numbers and some streets weren't "cut" correctly. So when you had an intersection of Street A and Street B and after the intersection it becomes Street A, sometimes OSM would still name it Street B and therefore all numbers are wrong. This was around 2 years ago so maybe the map data is better now.