Several things. For one, if its a Ryko, it'll probably have a green-tinted case. Also, check the disc. If there's a photo of Frank that looks like this:

... then, you have the Ryko. Also, the new remaster indicates the source of the remaster. I think Hot Rats has "Source: 1969 Analog Master" in Green Letters in the credits at the bottom. There are several other discrepancies between the 2012 and 90's versions, but those are a few of the obvious ones.
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