Dear Folks,
Andrew from TrustyTime now use a new trick: Before sending ordered watches to you, he send to you some photos. At one of photos is digital measurement device which show divergence 10 sec/day at piece exactly chosen for you.
Of course, after watches arrived to you, you executed some tests, which show divergence 21 to 22 sec/day. Andrew refused to share his horlogerie secret recipe, how to keep divergence at 10 sec/day. It is his business secret or mystery.
So from this point of view, take Andrew's photos of specifically your ordered piece with some grain of salt.