The value of an object regardless of its age tends to be whatever someone is prepared to pay at any given moment.
These two figures are probably not worth that much, as wee eddie says unless you can find someone who collects that sort of thing. In my experience, the best way to find out about such things is to take them to an antique shop and ask if they want to buy. You'll soon find out if there's any value attached to them, and of course, you don't have to sell.
My guess would be that they are worth around about wee eddie's estimate, but I really don't know, I'm saying that because I don't find them particularly attractive. I'm certainly not an expert on antiques.
Well, the identical single female figure sold for $110 in 2011 (Antique 19thC German Porcelain Nodding Oriental Black Nodder Doll Figurine) so I would think a pair (female + male) would be worth considerably more, especially since they are obviously very scarce/hard to find available on the market
Thanks for all your comments. lotvic I did find that entry re the Female fig, and my thoughts were the same as yours re their value due to probable scarcity of Male fig. Will give this the Green tick, at least I have something to make an estimate on.