Hello again Todd, sorry, I was interrupted yesterday (by a hot meal) and was unable to expand on my answer. The surname "Harwood" is well known in the electroplate world and from an early time. "Thomas Harwood", also from Birmingham, is perhaps best known and our Forum main website, has images associated with "Thomas" in its Silverplate Marks section. However your marks, and it would good to see and confirm them, are likely those of "Henry Millington Harwood". It is not quite as simple as that as "H. M. Harwood" has several electroplating concerns on his "curriculum vitae". Before we get to that, there is shown below, an image of a couple marks that may well be similar to your image. They come from a spoon and set of sugar tongs, both obviously electroplated.
Now here is an entry from the "LONDON GAZETTE, JULY 6, 1886"
"NOTICE is hereby given, that the Partnership heretofore subsisting between us the undersigned*
Henry Millington Harwood, Henry Hodson Plante, and Walter Andrew Harrison, carrying on business in partnership at 185 and 187, Newhall-street, Birmingham, and at 12, Hatton-garden, London, as Silversmiths and Electro Plate Manufacturers, under the style or firm of Harwood, Plante, and Harrison, has been this day dissolved, by mutual consent, so far as regards the said Walter Andrew Harrison, who has retired from the firm. All debts due and owing to and by the said late firm will be received and paid by the said Henry Millington Harwood and Henry Hodson Plante, who will continue the business in partnership under the style or firm of Harwood and Plante at the same addresses as heretofore.
—Dated this
30th day of June, 1886.
H. M. Harwood.
Henry H. Plante.
W. A. Harrison.
The 3 person partnership referred to, had started only 1 or 2 years prior to 1886 but H. M. Harwood and. W. A. Harrison had been in a partnership together before that time as Harwood, Sons, & Harrison. You can speculate as to whether Harwood or Harwood and Sons had been an "entity" before that. What we do know is that H. M. Harwood & Henry H. Plante dissolved their partnership in 1892, but there was some residual activity 1894-1899 under the name of Harwood & Son. If the attribution of the "Harwood", "crown" and "Z" marks to "Henry Millington Harwood" is correct then the item in the post may well be from the very late 19th century Harwood & Son period. The website "silvercollection.it" has more information on the "H.M.Harwood" concerns.
In your follow up post Todd, you said you wondered about the crown and letter marks. The electroplating concerns could be competing for business with silversmiths so it might be a good economic strategy to to have marks on items that had similarities to silver marks. Lots of 19th century electroplated cutlery carried these "pseudo hallmark" characters. As you noted there was the "Sheffield" crown mark that is carried on Sheffield Guild hallmarked silver. There was legislation in the British Parliament in 1896, to prevent abuses and avoid confusion, banning the 'crown' symbol on silver plate wares.
Fishless