Special Delivery Precancels (New York)

I have come across these two U.S. Precancels and need help identifying the precancel types. I'm particularly interested in stamp #2 (15 cent variety) as the lines appear unusually thin and the text is not centered between the lines either.



By the way, the 15 cent variety is perfined with the letters "KFS", with KF on the first line and the S below. Any idea what firm may have used this?

Thanks in advance for the help.

The 1st one is an L-26 Electro the 2nd an L-11 Electro.
The L-26 use was limited to Special Delivery & Special Handling issues.
The L-11 was used on Special Delivery, Huguenut set, Lexington-Concord set & the 1ct Sesquicentennial. Both + .15