1968 Chrysler 300 Trunk Lid from New Yorker

68 Chrysler 300 Conv. Lid P/N 23-19-8

68 NY 4 DR Sedan P/N Lid 23-19-8
That's really not the part number. That is the reference number to find the actual part number.

You would go to Section 23, sub section 19, line 8.

From the '68 parts book. Downloaded from : Parts Manuals – MyMopar

Of course, this shows one deck lid for all '68 Chryslers, which will assure the OP that it will fit.

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So... 23-19-8 would be for all deck lids. Then you break it down to the correct division for the P/N. Thank you for that explanation.