I have added the Kaplan "c. 1807" to the timeline. Thanks, Huck.
I don't think, that 1807 is relevant in the questions about these two different decks of different size (?). 1807 was just the earlier standard assumption about the global deck type "Petit Oracle des Dames" with some rumour about decks in the year 1800. Now we know about 2 decks in private possession from 1797 (note of Depaulis), and 1797 is also the year for the 36-cards-variation, which reappeared from a German publisher.
Would be interesting to know, if the 2 versions in private possession were (more or less) identical to the "standard deck" in 1807, or if another surprising difference might be expected.