Hello, I have found a supplier who has over 100 MOS 8580r5 available. I purchased a lot of 20 to test and I recieved them yesterday. Here are some pictures: Wilba thinks these SIDs have been remarked, and I trust his judgement, but there is really no way for me to know for sure. I tried to strip them of any paint or ink that may have been used to cover-up the old markings, but there was none. I used mineral spirits, laquer thinner, and a few other strippers that we have at the shop