I read somewhere -- maybe here at the 'gon, maybe elsewhere, about a person making purchases, and wanting the listing/receipt to *not* include the word, "vintage". This want was out of concern that an insurance claim might be denied, on the grounds that, "... your policy specifically excludes "heirloom", "vintage" and "antique" items."
It seems that the advices and thoughts offered here would avoid that particular pitfall by specific receipts and photographs having been provided to the insurer at the time of policy creation.
Great posts here.