Used in Boxes,
Coin Collecting Nos. 13, 14, 700 and early 705 type.
Introduced circa 1954 and in use
until the late 1980's.
Fitted to the engineers compartment cover this lock had differing keys which were allocated to each
major exchange area. These can be identified by a two letter prefix i.e. 39CA where
CA is the key code prefix.
The key number and prefix is printed on the rear of the lock.
Key prefixes are:- AL to AZ, BA to BZ and CA to CR.
Superseded the Lock No. 31.
Drawings - 90527/1 and
1 x Key, Lock No. 39.
These keys can be cut as they are a standard locker/garage door key.
The main difference is that they have a slot along them which nearly all locksmiths cannot cut.
This slot can be ground out with a Dremel but it's not a nice job.
The easiest way is not to cut the slot in the key but to file off the nib on the
front of the lock barrel, where the key slot locates.
To do this:-
- Lay the lock on a flat surface facing upwards.
- Remove the two screws.
- Lift the cover from the lock.
- The barrel should remain standing in the middle. Just lift
- The barrel is made of alloy and the nib is at the front end and will file away easily using
a small flat file.
- Test the barrel by sliding the key in.
- Replace the barrel into the lock.
- Replace the cover and fix with the two screws.