Mein Opa und die 13 Stühle (1997)

Austrian version of the novel "12 Chairs". While on vacation with her grandfather in Vienna, Samantha learns that she's inherited something. But upon arriving in Carinthia, Grandpa and his granddaughter discover that the inheritance appears to consist of only 13 old chairs. Only after the auction do they learn that money is hidden in one of the chairs. Grandpa now tries every means possible to secretly acquire it.