Identifying Ebauches...engraved under watch hairspring

Make sure you have your eye loupe ready before finding these logos, unless your eyes are sharp enough. These engraved logos can be found under watch hairspring. Take a deep breath and close look, then match with what you see here on this blog. Hope it helps you all in determining which and what calibers are inside that case. Some are with serial number, but more important here is to identify ebauches manufacturers. Enjoy your day.