The Absolut Vodka is laser marked, with a LOT-code (light grey marking), placed horizontally, ca 10 mm from the bottom. The height of letters and figures in the code are ca 2-3mm.
You can also find a black inkjet 5-digit code printed onto the plastic shrink-wrap (over cap and neck of bottle).
If you have any doubts that the bottle you have bought is a real Absolut product, please choose your country of residence to find the contact of your local office.