The production chart included in the Winter 1977 Avanti
Magazine (then called the Newsletter No. 37) showed the end of the
1963 run at serial number 4807 at the end of June, 1963.  It shows
the first square headlight Avanti at #4892.
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End of 1963 production run (June 1963):  #4807
Running changes - "1963-1/2" (July 1963): #4808-#4837
August 1963 Production: #4838 - #5120 with the First Square Headlight
car being #4892, presumably also in August 1963.

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