This is a nice example of the very desirable Parker Vacumatic Oversize. It was made in the USA and is date coded for 1936. The Oversize was the biggest Vacumatic that Parker made, it is longer and has a bigger girth than the standard Vacumatice range. It was an expensive pen in its time and is now very rare. See the fourth photograph for a comparison between the Maxima and a standard Vac.
This is the 1st Generation Oversize model with the lockdown pump filler. The first generation Vacumatics (1932 - 1936) were fitted with the metal lockdown filler and had a short blind cap, the seond generation (1937 - 1941) were fitted with the speedline filler with the longer blind cap, the third generation (1942 - 1948) were fitted with the plastic filler, again with a longer blind cap. The later Oversize models with the single cap band were rebranded as the Vacumatic Maxima.
The pen is in good condition throughout with minor marks and scratches commensurate with use. The gold plating is pretty good with only very minor wear. The colours on the barrel have bled a little into each other in one area. The pen's jewels at the top of the cap and the bottom of the barrel are the correct striped variety to match the cap and barrel. The imprint is a little worn but still legible. There is a small neat inscription on the barrel - "B E Coxe"
The diaphragm has been replaced and the pen is in full working order.
The 14ct gold nib writes smoothly with a Medium line.