Quote:
Originally Posted by Formulabruce
70 and early 71 have a flat black clock adjust knob. I think there is a chart on this forum with the two digit codes for each cluster application. Example would be a big "CZ" on the paper tag on the side of the cluster body. Dates were ink stamped on the printed circuit.
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X-2. There's also an ink stamped date usually on the top of the cluster which I believe is the assembly day of the whole cluster.