Married sets aren't uncommon, but this set features a mixed set of stickered new-old-stock Parker 51s. The fountain pen is likely from the 1960s with its black jewel in the cap. Nevertheless, it is stickered and the ink sac is completely clear. The pencil is a click-advance .9mm variant with a grey-pearl jewel from the 1950s. We found this set in the leftover merchandise of an old general store that closed decades ago. Maybe the original shopkeeper mixed around the pens and pencils. The vintage pen's sticker is marked "M" for a medium nib made of 14k gold.