For sure it is not RPM-002. If you look at the pics of RPM-002 at Variety Vista here:
http://www.varietyvista.com/02a%20L...5SRPM002.htmYou'll see that the position of the mintmark is incorrect. They are similar, but yours is lower and farther right. Mintmark position and orientation (tilt, etc) are some of the key diagnostics to look at when doing attributions.
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