We love finding Parker Vacumatics that are still in close-to-new condition. This vintage pen still has a light-yellow barrel clarity! It is no longer that green-yellow from right off the line, but it is still pretty good. No cracks, minimal--if any--brassing. We restored this pen with a new diaphragm. The biggest "flaw" is that its pocket clip spins, even though it is securely on the pen. The blue diamond was Parker's indicator that this pen was guaranteed for the life of its first owner. You will write an extra-fine line with its 14k gold nib. There is a little feedback, but this is a pretty good XF writer. Click the headline for close-ups. 12.8cm capped.