I saw this on ebay, a proof sheet for series 4 from 1961. Cliff and I will be working on the remaining 44 cards from this series, unless someone has an image of a slit from the series (wishful thinking???).
61 4 proof sheet-min.jpg
BTW, based on this miscut, the series 5 checklist which will appear on this sheet should be the one
without the ad for the MVP cards.
1961_361_ad_marichal-min.jpg