Another update ... The CLOCK is really a 6801, not a 6800. Also added assumed difference between 6870 and 6880.
What I found out about the 68xx/69xx locks (Changeable key locks from S&G) is:
6490: Double bitted, key retaining?, 9 levers like in 6860, SS3492:2005. (
https://www.assaoem.se/sv/site/assaoems ... assg-6490/)
6580: Double bitted, key retaining, 7 levers like in 6860 (+ 2 lever spacers?), SS3492:2005. (
https://www.assaoem.se/sv/site/assaoems ... assg-6580/)
6801: Double bitted, key retaining, 7 wheels + drive cam, curtain. (
http://www.wheelpost.com/Documents_PDF/ ... hure_a.pdf http://www.wheelpost.com/Documents_PDF/prima.pdf)
6804: Single bitted, key retaining, 7 levers like in deposit locks series 4110, UL 437. (
viewtopic.php?f=100&t=12009&p=110685#p110685)
6805: Single bitted, not key retaining, 7 levers like in deposit locks series 4110, UL 437.
6824: Double bitted, key retaining, 7 levers like in deposit locks series 4110, UL 437. (
viewtopic.php?p=116818#p116818)
6825: Double bitted, not key retaining, 7 levers like in deposit locks series 4110, UL 437.
6860: Double bitted, key retaining, 8 levers + 1 lever spacer at the back, EN1300 Class A. (
http://wiki.koksa.org/FAS_vds_Klasse1_verstellbar)
6870: Double bitted, key retaining, 9 levers like in 6860, no EN1300 restrictions on key encoding, UL 437. (
http://www.wheelpost.com/Documents_PDF/ ... rticle.pdf)
6880: Double bitted, key retaining, 9 levers like in 6860, EN1300 Class B, SS3150. (
http://www.wheelpost.com/Documents_PDF/ ... rticle.pdf)
6890: Double bitted, key retaining, 9 levers like in 6860, anti-compression like in Hobbs' Protector, "anti-x-ray", EN1300 Class C, VdS 3.
6980: Double bitted, key retaining, 8 levers like in 6860 (+ 1 lever spacer?), SS3880, EN1300 Class B, VdS 2. (
https://www.assaoem.se/en/site/assaoem/ ... assg-6980/)
6990: Double bitted, key retaining, 9 levers specific for the 6990, anti-compression like in Western Electric payphone lock, "anti-x-ray", EN1300 Class C, SS3880. (
viewtopic.php?p=115965#p115965)
The locks with 4110 series levers have all levers on the top. The key change mechanism is like in the deposit lock with a screw. The key is a bit smaller than for the 6880 type locks and the double-bitted key does not have a groove at the tip along the stem. Pick for single bitted 4110 style locks:
viewtopic.php?f=39&t=12058&p=111347#p111347 .
The 68x0 type locks can have levers on top and bottom. The orientation can be different, but it doesn't look fully random, e.g. BBBTTTBBB, TBTBBTTBT, BBTTBBTTT. So perhaps there is a set of standard orientations. The initial version of the 68x0 locks had just alternating orientation.
The difference between 6870 and 6880 is probably just on paper. Maybe the 6880 says in the manual "do not use the same key on two locks" or so.
The 6890/6990 are advertised with "anti x-ray". I don't see any relevant change to the 6880. So it is probably just a certification issue.
The 68x4 and 68x5 locks were called
Key-Op ("6800 series Key-Op locks"). The 6801 was also called
C.L.O.C.K. and
Prima-MP. The 68x0 locks are normally called
Sargent & Greenleaf FAS 68...
Patents: US5502990 for the 68x0 series. US4375159 for the 6801.
"optional carbide chip for drill resistance"?