I've been buying up Esterbrooks and parts like it's my job recently, and I've obtained two 1555 nibs. They work perfectly well and all, but I don't like them and would like to get rid of them.
Obviously the fairest thing to trade for them is other Estie nibs, and I'm definitely interested in getting others. I'll accept almost any offer, though. Just want to get rid of two useless but operational pieces of equipment and obtain useful pieces in their stead.
