This is the Steel Case Back which fits the Speedmaster MKII watches 145.014.
These are Omega supplied service case backs which fit the MKII Manual Wind Watch case reference 145.014. These service case backs have extra zero 145.0014.
Omega Speedmaster MKII 145.0014 Case Back Watch 145.014
Items can only be returned if either faulty, in the case of the item not being required then it must be returned exactly as received. For example if the item is new in a sealed packet and/or has protective covers in place then it must be returned the same otherwise item is no longer new and the value is greatly reduced, these items can only be returned/refunded by agreeing a lower value with Swiss Limited Editions before returning reflecting the new lower value of the item.