They look like the same tool. A lot of damage has been done by some [nationalistic] collectors calling 'Marx' everything Marx issued, including the 'Marx Hong Kong' but Marx were a huge concern with separate divisions all over the world, and some of them bought from contract manufacturers, ie; not Marx-owned factories.
I would imagine this is the case here, perhaps with Marx using 'their' painters. But the lack of difference in the moldings would suggest they came from the same place.
I quite like the HK version of the dalmatian, over the Marx one, and that purplish-black/brown has been linked to Blue Box/Redbox (Tai Sang) farm items (poultry), who did supply the Sunshine line to Marx, which might be a clue?
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