Launched by Patek Philippe in 2011, the reference 5073 is based on the highly popular Ref. 5074 with the bezel and shoulders set with 103 baguette diamonds (total 4.33 carats), including a matching diamond set folding buckle featuring a further 42 baguette diamonds. Available only in a platinum case with black baguette diamond-set dial, such is the time and resources required in creating the minute-repeating movement with cathedral gongs, combined with diamond set case, very few examples are understood to have been crafted and this is the first to be offered publicly. As a testament to their ability to manufacturer the finest minute-repeating wristwatches today, Patek Philippe has managed to create a remarkably clear and audible sound for the minute repeater in the 5073; often platinum cased repeaters lack the clarity of their gold counterparts due to the density of the metal. In addition setting the case with diamonds changes the tonality of the repeater, perhaps for this reason the 5073 was the first advertised Patek Philippe minute repeater to feature a diamond-set case and today remains the most highly jeweled minute-repeater available from the company.This time-consuming difficulty in creating a platinum and diamond set case that passes the strict requirements of Patek Philippe minute repeaters perhaps explains why production for the 5073 has remained so limited.