
Now that I have them, I'm curious to learn more about them. The one in better condition has an imprint that says "Black and White // SALZ BROS N.Y. PAT. APPL'D FOR". It is a chased hard rubber lever filler and the lever is imprinted "BLACK & WHITE" with an "SB" logo on the end of the lever. I think that the cap may be a mismatch since the chasing pattern is slightly different and it doesn't turn even a quarter turn before seating (like I care!)


The second is a smooth rubber eyedropper filler with the imprint "ALL PATENT RIGHTS RESE... // TAB-FIL // DELUXE MFG CO CHICAGO ILLS USA" and a feed that appears to be intact, but asymmetric left-to-right.

So, I have heard of Salz Bros. before, but not Night & Day, Deluxe Manufacturing nor Tab-fil. I can surmise that these are probably examples of inexpensive, early fountain pens from second tier manufacturers, but I'd love to hear more about these companies and the dates of the pens. Thanks in advance to all who have something to contribute.
Humbly,
Neil