The M P Sevres printed mark is for Paul Milet Sevres. This mark was probably used from around 1911 on the death of his father Optatus. Threatened with a lawsuit, Paul Milet changed its brand by reversing the initials. On the 4th October 1930, he filed the trademark “PM Sevres” in the same dotted circle.
Sevres was originally a Royal factory which later became an Imperial factory.
The blue mark 1844 dates to around the late 19th century.
The third mark down is for the Sevres mark of Louis-Philippe, Chateau de Tuilleries around 1846
The fourth mark down is a late 18th Century mark for Sèvres consisting of interlaced L’s.
The fifth mark is on some figurines entitle Psyche in the Victoria & Albert Museum. They were modelled by Falconet, Étienne-Maurice, who was born in 1716 and died in 1791