What exact month of 1977, Seiko 1st Alarm-Chrono come out?

[zeno333]

I was wondering what exact month of 1977 the Seiko A039-5019 (First Alarm-Chronograph) come out?? I know the earlier 0634-5019 first LCD Chronograph came out in June, 1975, but was wondering when the later Alarm-Chronograph came out in 1977 month wise.

[Adam]

I have an A031 from April 77. And my earliest A039 is January 77.

Hope this helps


Adam