Identify the controller chip used in the display

------Question for OLED 128x64 1.3
You list 2 controller chips for the display. (SH1106, SSD1306)
Which one will I receive if I order the display?


There are a number of products that indicate both as possibilities, as in the example excerpts below. In such cases the actual device used is at the manufacturer’s discretion, and no further indication of the actual chip used on any given sample is available.