Dennis..I have some of the different varieties ofthe Whiskey Pete's. I got my information from
"O'Neal Check List - Nevada Silver Strikes". Janet O'Neal sells this list for $5. or $6. and it's well worth it. She has listed varieties that aren't known to most collectors. Actually, she had the Pioneer errors listed long before anyone realized that they existed. If you have the time to really look her list over thoroughly, you might be surprised what you'll learn.
Janet lists the Whiskey Pete mint marks as thick GDC and thin GDC. There is also a variety she describes as sharp and clear or flat and blurred. I have seen the different varieties and they do exist. I'll try to pull my strikes and email you scans when I get a minute. Keep up the questions, I have enjoyed the responses you get.