The Chubb that starts with 44 was made around 1865, 126 was made around 1892 and the last Chubb 154 is about 1910 from my reckoning, Peter Gunn can give you the numbers in better detail, he owns the Chubb Archive website.
All of the Chubbs you have are the “Definitive” patent and are by far the most common found, this was the last design of the detector locks that Chubb made, most are of an average quality whilst few are of the very top quality reserved for the most (Shall I say) deserving customers, the top quality locks were usually for customers with a bit more disposable income to spend on such higher quality items.
I am lucky to own a top quality Chubb Detector lock from 1873 and it is like new, perfect in every way, it looks and acts like new, I expect your 44 to be one of these, I can’t say for sure but I suspect that it is.
the others are quite common but I would get some keys made for them, there is no point owning a lock unless it has a key, most of us keep keyless locks in our collections just waiting to have one made for them, it’s just adds to the appeal to play with it every now and then.
If you don’t know much about the famous Chubb Detector Locks just search for it on here, there is a great wealth of information on them, if you have the time read up on “The great lock controversy”.
Kit
