Here's a newly discovered unlisted oil reservoir insulator. Not in any of the books or NIA website! Measures 3 3/4" tall x 4 1/8" wide. Has 3/4" pinhole. The base is completely flush. Unmarked. Found in Spain, but likely British made.

Excellent condition with factory created flaws- 2 straw/crack lines that are glazed over (one on each side), and one bb glaze ping that caused surface glaze crazing [id=602369417]. Some cement in pinhole. Some light use marks. Easily VNM.

First email that says they will buy it gets it for $400 plus 8.40 postage. Optional insurance extra. Thanks!