Nice find! tokencatalog.com has 100# and 7# denominations shown as scarce and very scarce. You might consider posting your find on that site. If you don't want to do that, pm me and I will do it for you.
Ice tokens were used as follows. The customer who regularly used ice for their icebox would purchase ice in advance from the ice company. In exchange for their cash, they would be given tokens in whatever denomination they desired (based on the capacity of their icebox and their usage). Then, as they needed ice, they would put out tokens on their kitchen doorstep and as the ice deliveryman came around on his route, he would supply the amount of ice called for and take the tokens. The usage of tokens in this manner solved three problems: 1. The deliveryman would not have to handle cash with the possibility of him pocketing part of it. 2. The ice company would be paid in advance and would not have to bill customers or worry about late payment. 3. The customer would not have to put cash and a note outside on their doorstop. This latter issue deprived small boys of a source of income, but they moved on to honest work, rather than pilfering ice money. A fourth advantage to the ice company was that any tokens that were lost or otherwise not redeemed were almost pure profit to the company.
...Hey Thanks I just listed it on there site. It has the 15# that i have VERY Scarce. So now all I have to do is find a buyer. Thanks for the great info!!