A.G. Bradbury 2001 Submarines First Day Cover FDC Sovereign 4 £25 elsewhere

A.G Bradbury 2001 Submarines Stamps FDC, cover Sovereign number 4. 10/04/01. 273 of 500. Excellent condition.
Selling for £25 at http://www./2001/submarines/hms_conqueror.html
Proof of postage obtained. Other postage options available, including international. Postage combined for multiple purchases.