Crucifixion of Christ, with the Virgin and St John

Tyrolean glass painters often used engravings by the Italian artist Marcantonio Raimondi as a model. That is the case for this reverse-glass painting: the glass painter only added the splendid starry sky. The process of glass painting is the reverse of that for an ordinary painting: fine details are applied first on the back of the glass panel and the rest of the image is subsequently steadily worked up around them.