Two Pelikanos from the mid-to late 1960’s. Both are cartridge fillers with ink windows.
The black one is in good shape, but the blue one looks like it has some minor teeth marks at the end of the barrel. It’s not difficult to tell that it was a student pen…
This page has a good summary of the history of the Pelikano range within a site that has lots of good information about Pelikans.