Esterbrook 1551 Dubonnet J Series Lever Fill Pen 
This is definitely NOS pen with the  original stickers in place.
I removed the section and the SAC is still as pliable as the new SACS I use every day
No scratches, dings or teeth marks. 
Both jewels intact, Lever draws .9 ml of water.
 
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SEE AN ESTERBROOK PEN YOU LIKE BUT PREFER A DIFFERENT NIB: ASK ME ABOUT A TRADE OUT NIB. Want an upgrade to a 2000 Series or 9000 Master Series nib?
We are happy to trade out a nib for any other nib in stock.  We will figure the difference in nib value and trade out for an additional price or credit.