In A Nutshell Antiques and Interiors has dated this Silver Perpetual Desk Calendar to the 1910s.
There is even an option for leap years.

It is an unusual model and nice that it displays a full year at a time, rather than most that display only a month.
The frame is clearly hallmarked for London, 1912 and it has engraved initials in one corner "G.M.W".

It's in good condition for its age. The silver frame has some small dinks and marks here and there (see photos) but nothing major. There is some discolouration and minor losses to the paper cards but nothing detrimental and overall it displays well. It has been lightly cleaned and polished and is ready for use.
The best description comes from the photos so please look at them all carefully and if you have any questions just ask.
Tracked UK Delivery £8
In A Nutshell Antiques and Interiors has dated this Silver Perpetual Desk Calendar to the 1910s.
Selling good quality victorian, georgian and earlier furniture, accessories & decorative items. Ashburton, devon. LAPADA member
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In A Nutshell Antiques and Interiors is a registered member of LAPADA CINOA