'Copenhagen; Roofs under the Snow' by Peder Severin Krøyer

This is probably Udsigt fra Christianshavn mod Nikolai Taarn. Marts. ("View from Christianshavn toward Nicolai Tower. March.") from March 1871. It has number 43 in Christensen's book and dates from March 1871. Only point is that Christensen gives its dimensions slightly smaller (16 x 19)