Barrel, Cap, Grip for Graf von Faber-Castell Parts and FPR Nib Nib: FPR flex Cap: faber castell (different model from the barrel below) Barrel: wooden barrel (Faber castell) initial failures...
Barrel, Cap, Grip, Feed for Platinum Century #3776 (5) Used only nib barrel, cap, grip, feed made of ebonite
Barrel, Cap, Grip, Feed for Platinum Century #3776 (4) Used only nib barrel, cap, grip, feed made of ebonite barrel extra long
Eureka V8.3 Symmetry (October, 2019) Upgrade List (Compared to Previous Version) 1) design changes to grip frontal section 2) grip length reduced 3) external design changes to make it more ergonomic
Eureka V8.2 Symmetry (September, 2019) Upgrade List (compared to previous version) 1) double start thread used 2) overall thickness reduced 3) grip a bit longer 4) internal design changes to improve concentricity and stability 5) fully usable as eyedropper (ink will not seep through threads, because sealing happens before it) 6) Internal design changes for smoother capping.
Eureka V8.2 Asymmetry (august, 2019) Upgrade list (compared to previous version) 1) External design changes for better postability of cap 2) Internal design changes for better postability of cap 3) Internal design changes for smoother capping
Eureka V8.1 Asymmetry + 14K nib (August, 2019) Upgrade list (compared to previous version) 1) Thread changed to 3 start thread for grip and cap. 2) external design changes 3) cap internal design changes
Eureka V8.0 Asymmetry (May, 2019) Due to, increased request for Asymmetrical deign that is cap postable, this design was created. Over all size is bigger than 149 (the nib is smaller, but bigger than #6) grip section is thicker than symmetry counterpart. Reduced grip ~ barrel transition bump smaller thread pitch used balanced feel without cap, just like symmetry. when posted, weight balance a bit to the rear uses Eureka ebonite ..