Antique Sterling Silver 1900 Shell Pattern by Reed & Barton Sterling Silver Souvenir teaspoon.

 This spoon measures 5 7/8" in length and has a detailed ornate etching and raised relief for CHICAGO in the bowl. 

The egg shaped bowl has a very tiny slight indent on the side. Really not noticeable but wanted to mention.  

The spoon is marked on the back for Sterling with the early Reed & Barton hallmarks.