Harold Olmo’s photograph of vines in the Pommard Les Croix Noires vineyard, 1951. The less-than-healthy looking vine in the foreground could be damaged if it is not instead seriously virused. It also is worth observing that there is a fair chance that the copper-green verdigris tone in many of the vine leaves in this picture bespeaks heavy application of Bordeaux mixture to control downy mildew.
I would expect that this photograph was taken about a month after vintage (which in the 1950s was ca. late September in Burgundy), and therefore in mid-October or early November 1951 — and thus in the Burgundy autumn. In all likelihood, by the second or third week of November, the vines were defoliated and going dormant and Olmo’s cuttings were then taken from the selected vine(s) in the vineyard and then sent on the U.C.D.
Picture source: https://fps.ucdavis.edu/grapebook/winebook.cfm?chap=PinotNoir , sourced in turn from U.C. Davis Department of Special Collections. Olmo Papers, D-280, box 54: 46.