Vtg (a) Sterling Precision Slide Rule Made in USA - (b) Pickett box only N903ES

Description

Vintage (a) Sterling Precision Slide Rule Made in USA - (b) Pickett box only N903ES
Estate Sale find.
a) Sterling Precision Slide Rule
b) Picket N903ES - this is a box only (the Sterling was inside, unfortunately the Picket was not in the box.
c) a few manuals for the Sterling and Post.
d) a random metal piece (does it go to a Pickett that someone can use?)
See pictures for condition.  Feel free to ask questions - I don't know anything about slide rules.
Will ship USPS or UPS ground.
Will ship via Ebay Global Shipping program for international.