I don't think you are crazy but I would venture to say there are probably several thousand blends that come in tins. Not all are readily available but, none the less. If you could describe the tin art and type of tin maybe someone can point you in the right direction. The sites phil listed probably have the best assortment of blends available in the US cataloged.
Just for your future help too, some not all, actually have a description of the tobacco including the cut. And if it doesn't there are a couple of different pipe tobacco review websites that will describe the cut.