One of the most exciting aspect of stamp collecting is to discover an unnoticed variety in one's collection. I have scanned some examples. You certainly need good eyes or a magnifier to spot the BORNEQ error in the Malayan Borneo Exhibition 1922 stamp. The large "S" in the 6 cents overprint is clearly seen when compared to the normal. It is easy to miss on its own.You will need to click on the 50c pair of stamps to see the error Jessleton instead of Jesselton. There is definitely a lack of detail and quality with these more modern stamps using the photogravure process.