The anomaly is the Russian Close Up blu-ray from 2011, which sounds wonderful: crystal clear, yet free of any ticks or pops. It's clearly been restored but its frequency range is completely intact. It's a different A/D transfer (different sync -- arguably better, though obviously this means little since the dialogue was done in post!), which may have been produced by Mosfilm for the restoration. Bizarre that it appears on just one disc.
