Does appear to be a little dinged up, but it's new! Should work just fine.

Here's the description:

Our next generation of transformers includes many new features while maintaining the quality and reliability that Vista is known for. Some of the features include an extra-large terminal strip for multiple low voltage cable connections and a 120-volt terminal strip for easy hardwiring. A custom-designed, weathertight, clear-coated, stainless steel casing seals components from moisture and debris. Take-apart stainless steel hinges allow for easy door removal and greater access during installation.

Height: 9 Primary Color: Stainless Steel Lighting Transformers Watts: 1200 Primary Material: Stainless Steel Manufacturer Part Number: MT-1200