Not sure if I recall seeing this maker before?

https://www.ebay.co.uk/itm/Vintage-enamel-sign-advertising-Reynolds-Newspaper/303034907738?hash=item468e49bc5a:g:FxAAAOSwy3JcQ1t1:rk:32:pf:0

I think thats a pretty early sign right there, pre 1900 in my opnion

Very rough looking enamel, not smooth and looks bubbly. Possibly puddled iron plate?

I've noticed that quite a few old newspaper enamel signs have makers' names on that I haven't see anywhere else. I wonder why this is.
I've got an ancient old sign for Daily News with the maker's name British Enamelled Iron Co Ltd which I've never seen on another sign.