This may be an ignorant (if not anal) question, but I'll ask anyway: What do my fellow EM enthusiasts do about the Manufacturer's Certificates that are usually found on the left side of the top-arch on their EM games?

Leave them? Remove them as part of restoration? Replace them (are there replacement ones like what you can get with Score Cards?). They're pretty ratty looking from age and wear and I wasn't sure what the preferred thing to do with these are. Should I just leave it (as part of the aged look of the machine)?

Thanks!