Hello Clint
For the French aircraft registrations, you can try
https://www.aviafrance.com/recherche.php
And, for the F-AROR, we will obtain a Morane 138... Bad luck.
But... since the data has been painfully compiled about 30 years ago, they are some holes, and, if the same registration was used by several planes, only one will appear. The "paper" version of the data (at least 5 pounds...) is at our local aviation library, I will make a check next week.
The original data was for years on line at the Civilian Aviation site, but, for some obscure legal reasons, all cancelled planes have now disapeared.
On the ebay photo, the Tricolors are visible on the rudder and near the wingtips. So we have more probably a French State owned airctraft belonging to a civilian structure rather than an impressed one. And the de Vizcaya belonged to the Corps Technique (technical staff of the Air Ministry), and looks similar. That was my reasoning
Regards
Jean