There is a bigger story to this than just number 573. I’m surprised any publication started recognizing this which is refreshing to hear. I spent decades opening 1991 topps just to try and find as many variations as possible. In doing so I discovered six cards, all of which I personally confirmed exist because I either own or used to own them. You said they were called “no logo” variations. I personally refer to them as bio box variations because the reason these exist is during production the sheet was fed through the press backwards and six players on the sheet have back where manager cards should be and six manager cards have logos where bio boxes should be. As far as I know it only effected the C sheet cards for a very short time. As such, these are very scarce.
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