Slovakia: Reformation 500th, Kezmarok Wooden Church organ

The year 2017 elicited a number of stamps from various postal authorities markings the 500th anniversary of the Reformation, generally pinpointed to 1517 with Martin Luther's tacking the 95-Theses document to the Wittenburg church door. Slovakia was one of those nations marking the occasion with a  stamp, in this case a single-stamp mini-sheet. The only content is the facade of the organ, that in the Kezmarok Wooden Church. An information card was included in my FDC that gives the builder Vavrinec Cajovsky from Levoca, and the year of completion as 1720. The Church of the Holy Trinity is built entirely of wood, and according to one site the organ likewise uses only wooden pipes. I have not yet found a specification of the instrument. The selvage of the sheet includes more detail of the balcony railing in the church and an enigmatic mountain and river scene. The stamp gives no indication of the location of the organ itself.