Authentic Antique Ironstone Pie Funnel/Cup

authentic This antique pie funnel was made in England well over a century ago. It is ironstone and the black transfer states "The Gourmet Pie Cup R.N. 369793 Patent". The funnel was baked into the center of a pie in an attempt to release steam and encourage a delightfully flakey crust. There is a hairline crack, chips around the vent opening, and a couple dark marks. No crazing is observable. The pie funnel measures approximately 3.25" by 2.25". A second funnel is available, it has crazing.