I agree! It's nice to hear from you again, Albano. :) I'd love to get my hands on a Whittington/Westminster chime mantel clock with a similar amplifier as you said a while back.
Hey cool colllection! In Poland there are a lot of clocks like this 5:31 ( the same story is with majak cuckoo clocks). You can buy one for 50 cents on the flee markets.
Small Mauthe striking mantel clocks like the one you showed at 16:00 have a bad reputation for wear and mechanical failure. Too much crammed into too small a package meant some of the strength of the design was compromised. I've had two of them and they were both hideously unreliable.