Code of Federal Regulations Title 39. Postal Service § 39.501.9 Demonstration or test Postage Evidencing Systems

(1) A demonstration or test Postage Evidencing System may print only specimen or test indicia. A specimen or test indicia must clearly indicate that the indicia does not represent valid postage.

(2) A demonstration or test Postage Evidencing System must be recorded as such on internal provider inventory records and must be tracked by model number, serial number, and physical location.

(3) A demonstration or test Postage Evidencing System must remain under the provider's direct control. A demonstration or test Postage Evidencing System may not be left in the possession of a customer under any circumstance.