[71buc]

I am certainly no expert. I don't generally offer opinions about such things. However, the things that give me pause are the R in Roberto and the LE look different from what I have seen from other examples from that time period. The signature also looks a bit deliberate in my opinion. The spacing between the first and last name seems to be much wider than others I have seen. I think that card in particular is highly sought after by people completing signed versions of that set. That coincidence may or may not be a red flag? For what its worth here is my 1972 Clemente for comparison. It came with fairly solid provenance. I do see some similarity. However my concerns would be enough to dissuade me from buying it. I hope this helps as you await more educated opinions.