Oh that would be wonderful, if you’re in the givin’ mood! I could pay for postage...
The one with the rubber ink sac intrigues me...what’s it called and I’ll run a google on it and see how it works...
Here’s a rundown, albeit one that’s more complex than you really need:
http://www.pentrace.net/penbase/Data_Returns/full_article.asp?id=266&cname=
See the part about lever fillers?
I think the pen I’m thinking of is an Esterbrook. It’s nothing fancy - would have been a school pen in its day, really, and it’s not in collector’s shape...but it’d be something to try!
I have to check and make sure it’s still working OK and all that, though. I have a few pens I like a lot and use all the time, and the others have just been sitting. :-\