1931-40 New Zealand Inverted Watermark Postage Stamp
This Postage Stamp, or postage fiscal as it is known is scarce due to its inverted watermark. To my somewhat untrained eye however I can't find the watermark or anysign that the stamp itself isn't just upside down in the picture.
Estimated value from Sandafayre is £1,200-1,300.
The bookmarklet lets you save things you find to your collections.
Note: Make sure your bookmarks are visible.
Click and drag the Collect It button to your browser's Bookmark Bar.