The work was listed in the catalogue published for the exhibition organised on the 100th anniversary of the artist's birth (R. Bernardi, Brno 1991, p. 38, cat. No. G390). Variant versions can be found in the artist's online catalogue raisonné created by Annick Auzimour under cat. No. 1033 and 3841. Attached is the certificate of authenticity by Veronika Reynková, the artist's granddaughter. Glazed with museum glass.