Louis Brandt Perpetual Calendar, 175.0300 vs 175.0302

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Does anyone have any knowledge about the second series of Louis Brandt watches from Omega. There are two different references 175.0300 and 175.0302. The examples on line look the same. The official Omega site was non informative. The calibers are either 1118 or 1116. Both seem to be in various examples I have seen online
 
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Does anyone have any knowledge about the second series of Louis Brandt watches from Omega. There are two different references 175.0300 and 175.0302. The examples on line look the same. The official Omega site was non informative. The calibers are either 1118 or 1116. Both seem to be in various examples I have seen online

I notice the 1116 variety doesn't have the" louis brandt" signature on the dial under omega.
Also the rotor on the 1118 is different and 22k gold.