I was noticing that the other day. For me, the SN1* filter was returning cards with notes like:
SN1
SN1, AU
SN1, MEM
but excluding cards with notes like:
SN10
SN100
Which is how I would expect it to work. But the SN* filter was only returning results with exactly "SN" in the notes, none with SNxxx. I would expect the SN* filter to return all serial numbered cards, unless there is another notation for that type of filter that I missed.
Ted Musgrave card collection 98.9% Complete: Cards Known: 1013, Cards Owned: 1002
I prefer the company of people who disagree with me for the right reasons over the company of those who agree with me for the wrong reasons.