Tempted to get a VCO but...

[ShiroTenshi]

Hi everyone, new here and a newbie, can anyone tell me what does 'SOSF' and 'cartel version' means? And i saw ppl talking bout the 'best'
version..whats that?

saw them here:
http://forum.replica-watch.info/vb/showthread.php/my-268-vco-attempt-84706

http://forum.replica-watch.info/vb/showthread.php/vco-qc-help-please-89253

Someone enlighten me? Im tempted to get a VCO too..

 

[honeybear]

Get the VCO from Puretime watch. The best version refers to the one with the trapezoidal (as opposed to square) date window, which was originally available from Silix-Prime with double AR coating on the sapphire crystal.