I know from comments here over the years that some folk extol the virtues of using a period piece of glass to either drink or eat from, and yes, several times a week I eat my half grapefruit from a standard ceramic cornflakes bowl, which probably suggests I'm a philistine, especially as I balance the bowl on my thighs watching the tv and the fruit tends to roll around a lot within the bowl. Even using a dedicated grapefruit knife the segments are never entirely cut through, and some difficulty then results trying to watch the tv, balance the bowl and manipulate spoon to break the remaining segments from the peel - perhaps the answer is to buy tinned grapefruit. One of my wedding gifts many moons back was an almost complete set of Dartington drinking glasses, and over the years by means of washing up etc. their number dwindled and all that now remains are two liqueur glasses - so I try not to use glass if it has rarity, sentimental, or monetary value. I'd imagine that dedicated bowls like this one would stop the fruit from rolling about.
I do remember we've had both the T and S marks on the Board some years back, and they are of perhaps of more interest for collectors who may not yet have seen these particular back stamps.
Of further particular interest re Webb Corbett's back stamps, and quoting from 'British Glass Between the Wars', edited by Roger Dodsworth, he writes .................... "Between 1947 and 1949 a letter S or T were put in the centre of the mark denoting Stourbridge or Tutbury, between 1949 and 1952 a star for both factories, and between 1952 and 1959 the actual year of manufacture".
I notice that I've penciled round the date 1959 and scribbled in 'No - at least 1964' - obviously I'd found something at odds with Dodsworth's suggestion. As always, these book dates indicating first and last years for a given mark have to be read with caution.
I found another of these bowls yesterday - marked with a Stuart back stamp - but none of them compares with my Walsh blue Pompeian grapefruit bowl from c. 1940.