I just got this watch from its original owner. And after some web surfing I ended up sifting through the wealth of information on this site. Anyway, I think this might be an original Heuer time piece. But, I have not opened the case yet, I understand that it is designed to be opened from the front after removing the crystal. Apparently, the case-back can be removed, but the movement is typically accessed from the face.
If someone would be kind enough to provide me with instructions regarding opening the case, I may be able to confirm the movement as well. I am most likely going to sell or trade this watch in the future. But right now I just want to marvel at the tiny Swiss machine inside.
Thanks for your help,
vr/ajp