Price formation of autographs of famous persons at stationary and online bibliophile auctions in Poland before, during and after the Covid19 pandemic - influence of selected factors.

Autographs of famous people constitute an interesting, albeit small, branch of the art market. Due to the limited number of works on the subject, the consideration of factors that can affect the price formation of these goods is important. The article analyses the results obtained from the Polish market for the last 7 years. In the study, measures used in finding pairwise correlations were used to identify potential relationships between characteristics. The results indicated relationships between the asking (and final) price and such factors as: the popularity of the person signing the document, the time of the document's creation and the impact of the Covid19 pandemic. The paper also proposed a special popularity ranking of famous people based on the Google Trends tool. In addition to the above-mentioned main factors, a set of other features of the document was analysed to a limited extent, taking into account, among others: the state of preservation, format or content of the document.