Pablo - I didn't look and make notice of internal stampings. The actual adapter I got looks identical to your kit minus the bearings & races.
I didn't know of the video until now. I did look for a sheet though.
I just watched it How To Overhaul A Bottom Bracket - Bicycle Tutor
and I've apparently installed mine backwards. The video indicates left thread on the drive side.
Thanks for the VERY rapid response!
"The things that will destroy America are prosperity-at-any-price, peace-at-any-price, safety-first instead of duty-first, the love of soft living, and the get-rich-quick theory of life." TR