The ticket looks good but I have four Pirates tix from 1972 from the Field Box, First Level seating that were priced at $4.15 too. I'm not familiar with all of the Pirates pricing that season but would two tickets in different areas of the stadium be the same exact price? Another thing I found interesting is the way the ticket is torn at the bottom compared to the ones I have. To get a straight tear right under that wording would be very difficult from what I can see. As you can see the wording - NO MONEY REFUNDED - is directly under that pretty close together. Not saying it's impossible but the tear looks too straight to me. I wonder if there's a chance this ticket could have been trimmed?
Here's a link to a couple of other Clemente 3000 hit stub examples that are on another website for what it's worth:
http://chicagotix.com/Baseball.shtml