You will first need to find out how the stamp was printed. If the edges of the panes were intentionally left with a straight edge, then no, but other factors will have to be investigated as well.
Being in India, you probably have better access to that information than others.
There is an e-bay listing with item #401633742561 that shows what looks like a full pane. It is fully perforated.
Hello,
Could you please let me know if the left stamp without the top perforation is an error stamp.
Right is the perforated one.
A 2015 Indian stamp.
Regards
Auro
re: Is this an error stamp
You will first need to find out how the stamp was printed. If the edges of the panes were intentionally left with a straight edge, then no, but other factors will have to be investigated as well.
Being in India, you probably have better access to that information than others.
re: Is this an error stamp
There is an e-bay listing with item #401633742561 that shows what looks like a full pane. It is fully perforated.