Platinum 3776 are good and designed for this use case - the inner cap is supposed to keep inks from drying out even with long periods of no usage. If you buy a

Platinum 3776 are good and designed for this use case - the inner cap is supposed to keep inks from drying out even with long periods of no usage. If you buy a restored Parker 51, they're nearly indestructible. Just dip it in a little water to get it flowing again.