I frequently visit Singapore on short business trips, and have usually received a rounded rectangular (for brevity, “square”) Visit Pass stamp. However, on my last visit, the officer first stamped a square stamp, cursed, crossed it out and stamped in a hexagonal one instead:
What, if anything, does the shape mean? As far as I can tell the text of the two stamps is completely identical. The officer said nothing to explain and my stays don’t look like visa runs etc.
I hadn’t realized this when I started asking the question, but while processing the photo I spotted the difference: the square stamp says thirty days, while the hexagonal one says ninety days.
Per Wikipedia my nationality entitles me to 90 days, so while the correction this time was right, previous square stamps of 30 days appear to have been in error!