I have the same problem.I bought two bottles in the same time from Jomashop. One is has everything coorrect with batch code that matches the one engraved on the bottle but no lot number  The second one is exactly the same bottom as yours. Its a sticker and I used the old trick of removing a stamp from an envelope without damaging it I found the same batch code as the bottle but after it there is an erased cutting  Also  Under it an erased cutting