Hello friends!

I have an Original 100BTC Casascius Gold Plated bar I put on eBay, and I'd like more people to see it. This is the link:
http://www.ebay.com/itm/222578022841

Someone told me there were only 17 of these made? Can anyone help identify this?

Also, I am offering $100 to whoever on this forum can guess the closest final winning bid. These are the rules:

1. Please make your guess in $10 increments to make this easier (rounded to nearest $10)
2. Can only guess once, do not edit, or delete your guess
3. Must guess no later than 1 hour before auction ends (so NOT within 1 hour of end).
4. Payment of $100 to winner will be made with PayPal, or sent cash/moneyorder in the mail, your choice
5. Auction must be completed and paid for before I can announce the winner
 
I suggest guessing now! The earliest guesses matter. If two people guess the same #, whoever guesses first wins.
I've been on ebay for 20 years now and I will hold up my end of this offer, please do not cheat or try any monkey business!
This is meant to be fun and help figure out the worth of this bar, plus return the favor to whoever guesses closest.
Thank you ahead of time for any information, and for helping me spread the word about this item.
Looking forward to your information and good luck with your guesses!