PDP-11/20 vd one that just says pdp 11 what are the date differences?? OEM?

[Paul Birkel]

Agreed; I neglected to mention that mine also is marked in that manner!
Seems like DEC had ramped up to about 15-20 machines/day by mid-September.

Guess that the front panel graphics guys "didn't yet get the memo".  Or
maybe someone was hedging their bets against an ignominious sales failure in
the initial front panel production?

-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Christian
Corti
Sent: Monday, February 22, 2016 4:32 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: RE: PDP-11/20 vd one that just says pdp 11 what are the date
differences?? OEM?

On Mon, 22 Feb 2016, Paul Birkel wrote:
> My PDP-11 is labeled as "S-386" and dated 9/23/70, which I guess makes 
> it fairly early in the production run (but I do wonder what the 
> initial manufacturing rate was given the relative riskiness of this 
> new architecture).  Anyone have S# and dates for "plain 11" vs. 
> 11/20-marked for comparison?

Our PDP-11 is labeled as "S-308", the date is 9/16/70. And I think they
called it PDP11-20 from the beginning, as the model number above the serial
number says "M11-20"

Christian