72 340 disassemble

Finally started to disassemble the original 340 from my 72 Demon. I got the car back in 1985, I’m sure the engine has never been apart. Block is a early 71 casting date. Even stranger, the bearings are dated 11-69. It’s a forged crank engine, came with 915 J casting heads with 1.88 intake valves. Is it normal to have these dated bearings?

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