The pen is the golden Vac, showed here among another Canadian OS and a standard burgundy.

The pen is strange as has same size of the OS pen but has a single band at the cap and shows a striped section. The Canadian imprint has a big 4 as date code, the nib only the PARKER imprint (and lower a digit that I can't see properly as goes under the section, looks a 8 or a 9).


Both jewels are striped.
Any inputs?
Thanks
Roberto