The Parker 75 is a cartridge/converter filler, a most convenient arrangement as it allows for the ease of use of cartridges with the flexibility offered by the use of bottled ink.  The pen performs equally well with both filling systems and which one to use is merely a matter of personal choice.  I favour using bottled ink, partly because I always have a range of inks to hand but I do enjoy the process of  filling the pen and being able to easily flush it between changes in inks. The use of bottled ink is probably a good deal more environmentally sound and is certainly much, much cheaper than using cartridges.  The pen has the original Parker 75 converter fitted and is supplied with two ink cartridges, so it is ready to write in either configuration.

The box is new and of high quality, it will serve well for transport, protection, and display. 

The barleycorn finish is particularly attractive and has the advantage of being very 'fingerprint resistant'.  As they were only made for a very short time, It is rare to find a '20u' pen in such remarkable condition.