For a serious sale enquiry, clear information is indispensable: salutation with first names, meaningful pictures (ideally with a note bearing the seller's name in the picture) and a concrete price expectation. In the specific case, a guideline price of about 1,100 euros was named by another collector. Among collectors, private auction-style offers à la eBay are additionally seen critically, since a sale among collectors is not primarily intended to achieve maximum prices.