Rupert Murdoch ,the founder of News Corp.  Tweeted yesterday that Apple shares at the $448 level are resoundingly cheap if the Facebook  public offering values the whole of Facebook at $75-$100 billion.

Murdoch’s amazing decision to plug another company  must be a first for Murdoch or any other media and entertainment bigwig. It comes just after JP Morgan issued a hugely bullish recommendation on Apple shares, predicting they will sell at $625 a share by December, 2012.  The force behind another  $175 rise or 40% is due to the surprising and unexpected sales of Apple’s iPhone and iPad, which pushed Apple’s 4th quarter earnings much higher than expected.

If Apple can earn $12-$14  per share a quarter then  it selling at less than 10 times its possible earnings per share this year. JP Morgan also pointed out that Apple is “assessing its cash usage options,” suggesting that a dividend or repurchase announcement could come this year.