Got a little more info on this coin NebTrac from 2 different sources, sharing it with you.
Hiya Frank,
I've had your Henry 1st recorded at the Fitzwilliam Museum, The Early Medieval Corpus, it is recorded as EMC 2014.0293. This is a coin of the Norwich moneyer Howord, reading +HOPORD[ ]E[PI?]C. The full mint signature was probably NOREPIC
Best Regards
Steve
The Henry I penny is type II. The reverse legend starts with +HOPORD and end with PIC (the letter C of square form). The spelling of this moneyer's name varies but he will be the man presently on record as Howorth; the mint is Norwich. There is flatness on both sides but most of the important detail is clear. If offered for sale at auction the pre-sale estimate would be around £600-700 pounds sterling.
I hope this is helpful.
Regards,
Peter D. Spencer.