I just recently found (as in actually found, more on this later) an Esterbrook pen in surprisingly nice condition. The only issue is that it was missing the cap, but the nib, section, and barrel were all there and in mostly working condition. I decided I wanted to restore it as it's my first lever filler, and have since removed the old sac and fully cleaned its remnants. All that's left is waiting for parts to arrive.
From what I can tell, the pen appears to be an Esterbrook dollar pen (*actually most likely a J series, as pajaro pointed out), but without the cap it's difficult to tell. It's also difficult to tell if it's red or copper in colour -- in person, it looks too dark to be copper, but also too dark to be red. The attached pictures make it look noticeably more red than it is in person.
I'm also curious where the best locations to buy parts are. I've of course tried ebay, but I haven't seen just a cap yet. On a few of the other sites I've googled, just trying to buy a cap runs you more than the whole pen without even factoring in shipping. I was wondering if there are a few recommended sites or people to buy parts from at a reasonable price?
Link to album with pictures: https://imgur.com/a/c6bCn
(The pen itself, see linked album for more pictures)
As for the "more info", I actually found it during a daily walk around the park. It was just lying in the grass without a cap in a location that's seldom traveled. The sac was completely useless, and definitely hasn't been recently restored. I spent a couple hours looking for the cap but wasn't able to find it, assuming it was even with the pen. The area I live in likely doesn't have many fountain pen users either, and it was obviously not there long -- the whole situation is definitely mysterious.
Edited by Khranos, 21 January 2018 - 18:47.