N.P.R. Two Tea Pots

I have two silver "tea pots".  Tea pots in quotes because I don't know for sure that this is correct. 

The have the Northern Pacific railroad emblem on the outside. 

On the bottom, it reads"

Reed A Barton

Silver Soldered

4 4 1

1   P

N.P.R.

The number 91 is on its side to the right of the P. 

I would guess the capacity of each is about 5-6 ozs.  So, maybe not a tea pot but a creamer???

Fair