It's important to note that:
* "Imperial plate" is not a formal term in heraldry or historical artifact classification.
* Royal families often had different sets of tableware for various occasions.
* The Pahlavi Dynasty era is well-documented with many photos and records of their lavish lifestyle. However, specifics about tableware are not commonly publicized.
If you're looking for more information, you could try:
* Searching online for photographs or descriptions of Pahlavi Dynasty tableware
* Contacting museums or historical societies that specialize in Iranian art and culture.
* Researching publications about the Pahlavi dynasty or Iranian history.
Keep in mind that finding information about this specific "imperial plate" may be challenging as it is not a well-defined historical artifact.