Ulrich Schneider Art Advice

Works of art will achieve a significant appreciation if a reliable attribution is possible.
I was able to attribute exactly, date and locate an anonymous winter landscape painting (above and in the background) short time ago.

The expertise, in a shortened form, for download (pdf in German)

In the background:
Denis Alsloot (1570 - 1626)
Winter landscape at Kastell Tervuren, around 1618
Oil on oak panel
Height 54 cm, width 68 cm
Private collection