RM1.00 prefix ZS0154xxx

Found it in a stack of 50 pieces of  RM1.00 prefix ZS0154xxx. 21 pieces all together.

5 sen 2011 die chip/extra dot with 3 dots

Another die chip/extra dot

FANCY NUMBERS

Some of my fancy numbers of  RM1.00 series of Tan Sri Dato' Dr Zeti Akhtar Aziz

ALMOST SOLID RM1.00 ZL2222242

RM1.00 ACA9825614 EXTRA PAPER

A precious gift from a friend that not many people who have it. I will keep this precious gift as a recalled memories. I'm not sure this type of error. Could someone elaborate it?