Well most of the vintage Sheffield’s were near wedges, the remainder were 1/4 hollow. The hollow razors as we know them today are more recent. I’m guessing that sometime around 1920 many of the razors produced were full hollow and there were still little bits of heavy ground razors produced. Straight razor production started a rapid decent around 1950. If you really want to find one you could post an ad in the classifieds. There are a number of guys that frequently sell in the classifieds, if you look through you will see some guys that sell there often, pm one or two of them.