The 2005 Mexico 100 Pesos (State of Colima) coin is part of the 180th Anniversary of the Mexican Federation commemorative series (1st Edition Phase) issued by Banco de México.
| Attribute | Specification |
| Issuer | Mexico (Casa de Moneda de México — Mint mark Mo) |
| Denomination | 100 Pesos ($100 MXN) |
| Year | 2005 |
| KM Catalog # | KM# 729 |
| Composition | Bimetallic: .925 Sterling Silver center core in an aluminum-bronze outer ring |
| Total Weight | 33.94 g |
| Diameter | 39.04 mm |
| Mintage | ~248,850 |
| Finish | Brilliant Uncirculated (BU) |
Obverse (Front): Features the official Mexican National Coat of Arms (eagle perched on a cactus devouring a snake) with the legend "ESTADOS UNIDOS MEXICANOS" along the top curve.
Reverse (Back): Displays the official Coat of Arms for the State of Colima, along with the inscription "ESTADO DE COLIMA", mint mark "Mo", year "2005", and denomination "$100".
Edge: Segmented reeding (alternating smooth and reeded sections).