This is a beautiful vintage unrestored vintage Conklin Nozac in red herringbone. Piston filler. The pen does not take up ink but the piston moves freely. Faceted pen. 14k warranted #4 nib with flex, which appears to be original to the pen (and says made in USA). Some signs of wear. Main flaw is the slight damage on barrel in last four photos, as well as tiny cap lip chip shown in pics 17 and 18. Awesome iconic vintage pen.