Hello, I have a couple of lever fill Sheaffers coming in the mail (a 350 and a Craftsman) and am wondering what J-bar size is recommended, should I need to replace ones I find in them? I have a couple of 54mm J-bars but am wondering if I'd need something larger like a 62mm.
I did a search and couldn't find exact answers, and so thought I'd just ask the forum.
Note that there is no Sheaffer model designated as a "350". That number, when found stamped on the barrel of a Sheaffer, is the price of the pen (in cents). It doesn't identify the model per se.
Sheaffer pressure bars (they didn't have J-bars, strictly speaking) are pretty hardy and don't generally need replacement, but on occasion they do deteriorate. I suggest being patient and finding a correct replacement pressure bar rather than using a J-bar, which will not function as well in the pen.
When the pens come, if you find the pressure bars have failed, you can post pictures and other information here to determine what sort of replacement you'll need.