To orient myself for this query I had to pull up a map. Seaham, Durham, England is the stated place of this newspaper with an unknown publisher. Of the available years (in the online archive at least) the last batch, from 1898 to 1938, are where this announcement would have come from. The nearest large city is Newcastle upon Tyne. Does that sound correct? It looks like the newspaper collection was scanned in fairly recently, so someplace was holding onto physical copies.

Claire, are you in that region to do any on-the-ground visits to the nearest local library or history museum? A lot of places may still have archives with the old "vertical files" - folders of clippings that aren't digitized yet (an observation based upon library/museum work knowledge here in the US.)