As to the "any other details and infos" there is an inverted watermark variety that carries a substantial premium, and a perf variety (13x12.5) that is a negligible premium, but worth identifying as a stamp collector.
The mountain was damaged in one position, just to the left of the summit, in 1948, and there are two positions listed with a retouched mountain from 1949.
As with many common stamps, there are things to look for.
In your third picture, between the denomination and the King's head, you can see the right-hand side of the crown and the left-hand side of the CA (which is an abbreviation for "Crown Agents" by the way), so the watermark is undoubtedly upright.
I think your stamp is perf 13 × 11¾, not perf 13 × 12½, and its Stanley Gibbons catalogue number is 145 or 145a, depending on whether the colour of the frame is yellowish brown or brown. Either way, the catalogue price is a few pennies, but it's a beautiful stamp, isn't it?
An interesting fact about all the stamps of KUT is that the words Kenya, Uganda and Tanganyika appear in different orders on different denominations of each series, so that none of the three colonies could complain about being named in an inferior position.
I maybe wasn't clear to the OP. I was suggesting other things to look for in checking over the one-shilling issues, not things that applied to his particular example...
Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Stamp Community assumes no liability for errors. Copyright 2005 - 2025 Stamp Community Family - All rights reserved worldwide. Use of any images or content on this website without prior written permission of Stamp Community or the original lender is strictly prohibited. Privacy Policy / Terms of UseAdvertise Here