Where can I get the newtonian spyglass?

[Zantozzzz]

I wanted to know where can I get that spyglass or a better spyglas than the regular one.

 

[giocoso]

I wanted to know where can I get that spyglass or a better spyglas than the regular one.

Surely, in CoAS (in the chest of Layton Dexter).
Rarely, random, in the Captain of ships captured, after 1-1.5 years of time-game, minimum....