I have several 1975 multi-colored $100 bills. Many of them are in UNC, they are not in Gem UNC, but several notes in my opinion are in regular UNC condition. A few of the notes fall into the AU condition, but high grade AUs. The $100s I have are both 2 letter L/B and 3 letter L/B and 3 letter C/B. Many of the notes are very well centered, paper is still bright white, some of the notes have an off white colour due to aging. Looking in the Charlton catalog, many of these notes are sell well above $100. Usually between $130-190. I don't have any replacement notes. But a local coin dealer would only buy them in UNC, not interested in any AU grades. They said the AUs are only worth $100 and they would buy the UNC $100s for $105. That seems awfully low to me for a UNC note. I think I could get a better price. If this is all they are worth, I was just thinking of just spending them. I will save some of the best notes for my collection, but I saved up too many hundreds and don't think I need that many as it ties up a lot of money. I also have a few $1000 bills, but sold them off for about $1,200 to other people who wanted them. But I find that saving so many high denomination notes in my collection is just tying up too much money. So I'm cutting down on the number I am putting away. One thing I must say is collecting CDN paper money for a hobby is very expensive. Especially the deposit box fees you have to spend every year to store the collection and the face value of all the notes. I want to know how much the notes are "really" worth. I just think the value to coind dealer was offering to buy them was way below their true value. Thanks.