This beautiful Tonga stamp featuring a silk Benham RSPB 1999 cover is a must-have for any serious collector. The stamp, sg 1428 20s., depicts a stunning image of the country's native bird species. This particular stamp also has the added bonus of being on a rare silk cover, making it a unique and special addition to any collection.With its origins in Tonga, this stamp is a great way to expand your collection of Australia & Oceania stamps.  Don't miss out on the opportunity to add this rare piece to your collection.