Reverse glass painting Adam and Eve vintage

Vintage reverse glass painting of adam and eve being tempted by the snake in the garden of eden. German origin, circa 1980s. Beautifully painted scene in the style of folk art. On the back there is a sticker with the name of roland bartmann, however we couldn't confirm if this is artist's name. Very good vintage condition. The backing paper is torn in few places along the frame edges. This does not affect the glass, as it is secured by nails. Dimensions: Frame width: 20.3cm (8in) Frame height: 27cm (10.6in) Painting width: 13.8cm (5.4in) Painting height: 20.5cm (8.1in) Please bear in mind that the actual color of the item might be slightly different than shown in the photos due to variations in monitor and browser settings.