I asked yuki a couple of days ago if they would fit a 2836 and a 2846. This is what they said:
"Thank you for your interest and visit!
The adaptor fit for ETA 2836 as well.
But for ETA 2846, we never try before. Sorry that we've no idea on it."
Also I asked about their dials and hand sets fitting on ETA movements and this is what they said:
"Our 5513 dial and hand set can't fit ETA movement .
Actually we're developing the hands for ETA now, also we'll have 5513 dial which fit ETA movement soon, probably it will arrive on Jun."
So, I guess they have seen the potential value in producing items for us hobbyists. I will wait till june to get one of these dials.
@stilty, I would like a couple of these adaptors please. 1 for a 2836 and 1 for a 2846. Thanks