On Wed, 5 Oct 2011, Tony Duell wrote:
  It's a 7 pin ACE tubular lock, of course. Similar
to the DEC frontpanel
 lock (you know, the XX2247 key), but with different pinning. 
. . .
  (I've alwyas thought of repinning the one on this
PC to take a DEC
 XX2247 key :-)). 
THAT would be an ideal pinning for it!
Anybody remember/save the actual pinning depths from that discussion?
(XX2247 is a "code number" that indexes into an array of actual
dimensions; XX2247 is NOT the depths of the cuts)
  I am not sure if all 5170s were pinned alike or not
(something tells me
 they weren't). 
NO.  I have encountered ones that would not "respond"
to keys from other
ones.