Ultra Rare Waterman 412SF. Sleeve Filler and 412 Sleeve Filler – 1910 to 1915. The “sleeve filler” is an interesting filling system. The sleeve on the barrel moves to show a pressure bar and the sac. Then you just have to press the bar with your finger to fill the pen. The 412 SF is […]
Tags: 412sf, filigree, overlay, rare, silver, ster, ultra, waterman