As I understand it, there is a 'code' to the scrip/block lettering and size of black top on the Cross gold range.
Large (standard) black top and block letters indicates 10K rolled gold.
Small black top and scrip lettering indicates 14K rolled gold.
Gold top with thin black line and scrip lettering indicates 18K rolled gold.
I don't recall the 'code' for the solid 18K gold models! Those I don't have.
A similar 'code' exists for the silver models.
Small black top and scrip lettering indicated solid sterling silver.
Black top with a slim silver line and block lettering indicates silver plate.
Yes, I do have a lot of Cross pens, some with proper nibs
Chris