Vintage 1952 brass perpetual 55 year calendar

Vintage 1952 brass perpetual 55 year calendar fabulous item very clean and clear dates etc please note rear easel has been replaced but does not detract from the item 15 cm round some age related wear

The perpetual calendar has a long history, having been invented in London by Thomas Mudge in 1762, around the same time that he invented the lever escapement.2