Grade: Bunn Special
| Manufacturer: | Illinois |  |
| Manufacturer Location: | Springfield, Illinois | |
| Movement Serial Number: | 3636546 | |
| Grade: | Bunn Special | |
| Variation: | RY.B.TempAnd | |
| Model: | 9 | |
| Estimated Production Year: | 1920 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 95 of 194 | |
| Grade/Model Total Production: | 169,740 | |
| Variant Est. Production: | 103,290 (16S-M9-21J-ONL-A6PTI-RY.B.TEMPAND) | |
| Size: | 16s | |
| Jewels: | 21j | |
| Jewel Material: | Ruby | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Ray | |
| Movement Setting: | Lever | |
| Plate: | 3/4 Plate | |
| Double Roller: | Yes | |
| Barrel: | Going | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted # of Positions: | 6 | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Railroad Grade: | Yes | |
| Dial Feet Locations: | 17.5, 39.0, 58.0 | |
| Case Screw Locations: | 3.0, 38.0 | |
| Movement Markings: | Bunn Special Illinois Watch Co. Springfield 21 Jewels Adjusted Temp. And Six Positions Double Roller |