Aurora 18s 17J Grade 10
Rare Top Grade

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Aurora Watch Co. 18 size 17 jewel open face lever-set Grade 10.  Rare example of Aurora's top grade, although the movement is marked "15 Ruby Jewels" it in fact has 17 jewels due to the movement's jeweled fifth pinion and this mismarking of their 17 jewel production is the norm for Aurora.  In total there were 300 examples made of this open face version of the Grade 10, the majority of these have a two-tone finish and this all nickel version is somewhat rarer (Greg Frauenhoff's excellent NAWCC Encyclopedia posting on these watches records 32 observations with two-tone finish compared with only 7 observations with nickel finish, click here to view Greg's posting).  This example is fronted by its correct double-sunk enamel dial and is housed in a Fahys "Oresilver" (nickel type metal) recase.  Movement serial number is 101028.

Running and a very nice looking movement overall with excellent color and luster but does have some scattered surface spotting and a few mild marks.  Dial has some scattered hairlines, some patched chips and flakes, and a few scratches.  Case is decent with average wear.  Good glass crystal.

$1200 plus shipment.