Pocket Watch Database

We noticed that you entered a relatively short serial number.
"216" could possibly indicate the grade of the watch and not the serial number of your movement. Serial numbers are usually more than a few digits.
From the American Horology Archive:
Illinois Grade Bunn Pocket Watch

Illinois Watch Co.

Grade: Bunn

Manufacturer: Illinois
Manufacturer Location: Springfield, Illinois
Movement Serial Number: 216
Grade: Bunn
Model: 1
Estimated Production Date: March 1872 - July 1872
Run Quantity: 100
Total Production: 1,200
Size: 18s
Jewels: 15j
Jewel Setting: Screw-Set
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Signing Style: Formal Script
Movement Inlay Color: None
Movement Setting: Key
Plate: Full Plate
Barrel: Going
Train: Coarse
Regulator: Plain
Adjusted: Yes
Dial Feet Locations: 16.5, 36.5, 53.0
Case Screw Locations: O-36.5, H-51.5
Movement Markings: Bunn
Springfield, Ill.
Currier's Patent
Case: Various
Database Version: v48.496

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Data Verification Reports

201
Verification Serial Map
300

jacobwalls07 143 · May 14, 2017

Serial Number 222 was reported as accurate.

Anonymous · May 7, 2014

Serial Number 300 was reported as accurate.

Illinois Grade Bunn Pocket Watch