The second picture showes the very impresive French 75,this one being an inter-war conversion.around 2,000 of these guns were given to the US forces during World War one so there are a lot of these guns in the states used as Memorials and salute guns.
Many of the guns used for salute purposes had the recuperators stripped out so there is a demand for internel parts for these guns even now.
After the war US industry built under licencs just over a 1,000 more 75,s and ironicaly Willys-Overland built the carriages !
Rob.........................rnixartillery.