Can anyone make sense of this one?

PI 225 R 2712

Obviously it's a 225, but I can't seem to decipher the rest of it. BTW, that "I" after the P could be a "1", can't see the top of it.

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PT: Trenton engine plant
225: Engine displacement
R: Passenger car application
2712: Made on December 30, 1968

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Ah, I didn't even think of a 'T'.
Thanks for the decipher Dan. I'm curious, how does that date code work?

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How does:

2712 = Made on December 30, 1968


Just curious how that works.......

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

2712 is the assembly date on a 10-kiloday Julian calendar. There's a chart in the front of each FPC showing the date code for each day of each month. I'm not sure why this is any better than simply stamping the date in 4- or 6-digit format, but they didn't ask me how they should do it!

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一期一会
Too many people who were born on third base actually believe they've hit a triple.