Fritz Winter "TRIEBKRÄFTE DER ERDE" (1944) Oil over monotype on tracing paper Monogrammed and dated in pencil lower right: FW44. Signed and dated in penci on the original mat: FWinter 44 29,5 x 21 cm Bruno Snell, Hamburg / Private collection, Berlin (by inheritance) Not in the catalogue raisonné by Lohberg.? Accompanied by a certificate by Gabriele Lohberg, Trier, dated October 2011