I got lucky and found a NOS burgundy Soennecken S6 in ebay for $37. The nib looks to be a med oblique, but the nice thing is that it has a lot of flex. Piston was a little stiff until I got some ink in and worked it a bit. I liked it so well I went back and bought two more one for a gift, the other a back up. I pulled the nibs on these and applied a little silicone grease and slicked up the action, I guess they are so old any lubicrant must have dried out.