It is interesting, but it does not deter me from my original assessment of that handle being original. It is the same shape, and note that the profile of the head on yours is not the same as the profile on the head of the hammer in the catalog. The head on the hammer in the catalogs is smooth and uniform across the cheek from the striking face to the tip of the claw. Yours has a shape to it, with a narrowing between the poll and the cheek before it meets the handle. When they went to a new forge design for the head they very well may have gone to a different wedge, too.
EDIT: Note also that the figure in the 1936 catalog, while rendered, indicates a "VLCHEK" - with quote marks - logo. I have several Vlchek tools with that mark (a few of them posted on this thread), which is early. Pre-war. Yours has a wartime or later logo without the quote marks. Again, indicating, I think, that yours is later than 1936, and raising the possibility they changes some things (wedges, shape of head). We just don't have any 40's or 50's catalogs, as far as I know.