A selection of items from the personal collection of Ronald and Nancy Reagan will auction at Christie's.  

Ronald Reagan was an actor before he began his political career

Among the highlights is a Tiffany American marine chronometer presented to Reagan on his inauguration in 1981 by Frank and Barbara Sinatra.

The front displays a plaque engraved: "GOOD MORNING MR. PRESIDENT".

It's expected to make around $5,000-10,000 in the September 21-22 sale.  

A pair of silver beakers gifted by Margaret and Dennis Thatcher are also on offer, with a valuation of $1,000-2,000.

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