On 4 September 1929, a plaque commemorating Bolesław Chrobry was unveiled on Šolta Island by Professor Tadeusz Hilarowicz (cf. "Dziennik Bydgoski", 7 September 1929, no. 206, p. 2). In addition to Poles, the ceremony was attended by representatives of the local authorities. The initiative for the "monument" was taken by the Board of the Cooperative "Polish House on the Adriatic Sea", and the organising committee consisted of Prof. Tadeusz Hilarowicz, Jan Moczydłowski and Councillor Zdzisław Sowiński.

The immediate inspiration was probably the erection of the Chrobry monument in Gniezno. On this occasion, the board of the Cooperative even sent a letter informing that the area where the Polish House was located was named by the Cooperative in honour of Chrobry - Chrobrzyn and plans to place a commemorative stone in this place. The members of the co-operative took this decision in April 1929 ('Epoka', 15 April 1929, p. 3).

In the end, the commemoration did not take the form of a boulder, but of a plaque set into the wall of the building, with inscriptions in Polish and Croatian in honour of Bolesław Chrobry that read:
IN MEMORY OF / BOLESŁAW CHROBRY / 992-1025 THE FIRST / POLISH KING / ONE OF THE GREATEST / SLAVIC RULERS / THIS SETTLEMENT / ACCORDING TO THE DECISION OF THE GENERAL ASSEMBLY / OF THE ASSOCIATION "DOM POLSKI NAD ADRIATYKIEM" / WILL BEAR THE NAME / CHROBRZYN / 4. IX. 1929. //.

The Board of Directors also informed that in connection with the stone-laying ceremony a trip to Yugoslavia would be organised, and its participants would take part in the unveiling of the monument ("Epoka", 2 June 1929, no. 149, p. 6.). The plan was very interesting - the intention was to visit Vienna, Budapest, Zagreb, Split, Dubrovnik and Cetija. It was intended to be attended mainly by entrepreneurs and - due to the planned launch of a 'biological station' - also by naturalists. There were also plans to open a permanent exhibition of Polish products in Split ("Epoka", 29 June 1929, no. 176, p. 10).