A look at what is currently available on eBay
 VINTAGE MONTBLANC #342 PISTON FILLER PEN 14K NIB BLACK NR US $56.00 
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 Black Barrel Gold Tone Clip Piston Filler Fountain Pen US $7.36
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 0.6mm Stub Nib Piston Filler Black Metal Fountain Pen US $5.22
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 Piston Filler 0.5mm Broad Nib Black Shell Fountain Pen US $6.16
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 Piston Converter Ink Filler 0.4mm Nib Fountain Pen Black US $7.02
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 Piston Converter Filler 0.38mm Nib Fountain Pen Black US $6.22
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 Black Metal Barrel Piston Filler Writing Fountain Pen US $6.74
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 0.4mm Nib Piston Filler Writing Fountain Pen Black New US $7.14
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 0.5mm Nib Ink Piston Filler Black Alloy Fountain Pen US $6.67
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 Black 0.38mm Hooded Nib Piston Filler Fountain Pen US $9.57
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 Piston Filler 0.5mm Calligraphic Nib Black Fountain Pen US $6.31
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 Piston Converter Ink Filler 0.38mm Nib Fountain Pen Black US $6.39
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 Black Gold Tone Clip Piston Filler 0.5mm Nib Fountain Pen US $4.89
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 Vintage green/black Pelikan 120 piston filler US $175.00
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 0.38mm Medium Hooded Nib Piston Filler Fountain Pen Blk US $5.41
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