Any idea just how scarce/rare the 1999 Silver panda BU coin is with large date/underlined "1&qu

I realize that this topic is so obscure that even many panda "experts" would only have an educated guess. But I wanted to toss it out there and see if anyone cares to chime in. There are 3 distinct varieties for the 1999 silver panda in UNC.
small date------seems to be by far the most commonly available
large date/plain "1"---This variety as of late has been widely differentiated from the small date and commands a significant premium
large date/underlined "1"----I have seen just one of these offered on ebay (bought it yesterday at a heavy premium), and havent seen another anywhere.
Large date/underlined "1"
Large date/plain "1"
Small date
small date------seems to be by far the most commonly available
large date/plain "1"---This variety as of late has been widely differentiated from the small date and commands a significant premium
large date/underlined "1"----I have seen just one of these offered on ebay (bought it yesterday at a heavy premium), and havent seen another anywhere.
Large date/underlined "1"
Large date/plain "1"
Small date
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Comments
Congratulations on that.
Thanks for pointing that out. I often wondered what the difference was between the two large dates.
I believe that variety is also known as " Large Date crosslet/serif 1-Very hard to find.
Now I got to have one.
It appears that NGC doesn't acknowledge the variety difference.
Large date, serif:
Small date: