Keepers of the Lock Orchestrion Roll

Keepers of the Lock Orchestrion Roll is an orchestrion roll.

Source
Keepers of the Lock Orchestrion Rolls can be obtained by exchanging 3 with the following vendors:
 * Madhura - The Fringes

Keepers of the Lock Orchestrion Rolls can also be obtained during the Moogle Treasure Trove event by exchanging 7 with the following vendors:
 * Itinerant Moogle