Date/serial of Voyager switch to single rigid PCB?

[Mark Power]

Chuck McCord was the Single Chip Series Ten (SST) IC project manager, as he described at the HPCC 40th Conference and in the book RCL40.

I've had a look at Chuck's SST slides and he doesn't provide a date for the switchover, but he includes photos and serial numbers of examples of the original design and SST models so that could act as a starting point.