Old Pirates

This magnificent and rather unusual example of Holtzapffel plywood jigsaw puzzle features a painting of a high-seas piracy scene, the artist signature unclear but I think showing a handwritten date of 1913.
Please let me know if you can identify the artist.
The reason I say unusual is the combination of cutting styles used. The generally interlocking border does not extend around each corner, which can be seen in the image showing it separated from the main area. The centre features a completely push-fit, or non-interlocking cut style with colour line-cutting extending throughout, although concentrated mainly on areas of large colour variation, such as between sea and sky, or ships and water. Early Holtzapffel puzzles, with this same basic cut style, tended to be cut along far subtler colour boundaries than this example, which also comes in a Walker & Holtzapffel (Retail) Ltd box with one of their checkers labels, albeit one which does not record the puzzle title and measurements. The address on the box of 61, Baker Street is understood to have been the company home from 1932 onwards, when most of their puzzle examples were in the later cutting style with rather more interlocking pieces.
Perhaps this was an experiment in recreating a puzzle from their earlier period, either by one of the original cutters, or simply as an exercise by one of the newer interns.
See also the puzzle On an Indian Farm, which features an almost identical technique.

Artist: Unidentified
Date: c1932
Brand: Holtzapffel
Material: Plywood
Nationality: British-England
Pieces: 602
Size: 28 1/4" x 15 1/2"
Theme: Maritime
Title: Old Pirates