In a miraculous survival, I think there is an obvious reference to Milka (the ubiquitous German chocolate brand) in The Eye:
I paused and looked up at a milk chocolate advertisement with lilac alps. This was my last chance to renounce penetrating into the secret of Smurov's immortality. What did I care if this letter would indeed travel across a remote mountain pass into the next century, whose very designation - a two and three zeros - is so fantastic as to seem absurd?
I nearly lost the train of thought in light of the fantastic sentences that follow, but is not the opening clearly a reference to Milka?