Stop in for a cup of coffee

I was looking at pics this morning. This was on a 67 GTX Hemi car.
Whats up with the sideways T punched in the left fender tag??
Did they really put a Hemi Engine tag on them (right tag) or is that someone's humor??

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I saw this on TV! It's a clue to where the Knights Templar hid the Holy Grail! It was actually a HEMI block!