Hi warren- first of all congrats on all those keys! They are nice examples- the Mappins is great and I haven’t seen a wire bow Climax/Whitfield type before- more on that one later.
Oldlock will know far more than me, but having had countless Climax, Whitfield’s and Cotterill’s pass through my hands I have to admit to never having a Mappin’s, so I’m going to pass totally on those.
I agree with oldlock on the wear aspects though- Bramah nailed it with the vertical sliders being pushed down by the key. All the others with radial sliders being pushed radially outwards (by the key) were never reliable locks- I’ve mentioned this before but they were notorious for sliders cracking over the slots and since each slider was individually sprung, the compression springs were small and prone to squashing and breaking midway. 25 years ago I used to hand make keys, turn new drill pins and hand file new sliders etc. The Late Great John Rattue ‘Spring Man’ was the only source we knew for springs, and with a new set of those I gave many a new lease of life. These days the labour alone would be many times what the lock or safe is worth and few would be prepared to pay. Seeing the smaller stepped extension on the end of the Mappins keys means I can only imagine what they were like..
Sorry I can’t answer all your questions but with regard to locks bearing just ‘climax detector’ there were many which copied and used the principle- in the 1980s there were hundreds of booming Working Mens Clubs here in the South Wales ‘coal’ valleys, and I used to see a lot of unmarked safes fitted with these locks. Usually very basic cast cylinders with sliders and with no actual ‘detector’ at all. I think from memory that Phillip’s may have been one of the few safes that used them and was brave enough to mark their name on a plaque, but I might be wrong and Phillip’s might have used a Cotterill. Most of the unnamed safes were typical square cornered construction with moulding on the door, and a fancy cast brass hexagonal knob handle. I think some of the bottom end British makers simply saw them as something different to fit and market, accompanied by the usual tongue in cheek claims of pick resistance and security.
Your wire bow is a nice key, and like oldlock said it could well be a replacement copy. I’ve never seen a wire bow Climax type, but I still have quite a few antique blanks for them and for Bramah’s, so this one’s got me curious!
All I can add is that the Climax blanks always seem to have the stepped stem and distinctive arch shaped bow, scalloped at the base where it joins the stem- bit like a shell shape, whereas all the Bramah types I have are straight stem and wire bow. That’s not to say that you couldn’t use a straight stem wire bow blank, turn it down to ‘step’ it, and then re-turn the fluting etc, but it wouldn’t be the most straightforward option to take. Any such key once aged by 40 or 50 years would certainly be difficult to distinguish. It’s the sort of ‘dodge’ I’d still do myself if I didn’t have an exact match blank, but that doesn’t mean it’s not an unusual original, so case still open on that one?
BTW I still have the Cotterill’s Patent Climax Detector lock, with both original keys, which is also marked Wilson’s Patent…just to confuse things a bit more lol…
Sorry I can’t be of more help. I’m sure someone into all the history and dates can come up with all the rest 🙁nod):