I first thought this was a miniature Air Force Dagger as it is 9 1/2" overall length. However, the configuration and the size are consistent with the relatively small Royal Romanian daggers.
This dagger is from the Bob Rodgers collection and can be purchased directly from him. Please contact Bob at 253 205 9906 or email firstname.lastname@example.org. Worlddaggers has no connection to this dagger or it's sale and lists it as a courtesy to Bob Rodgers.