A symmetrical bridge in -65 Speedy? for reals?

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Saw a movement listed as a 105.012-65 that has a symmetrical bridge. Serial seems right on the edge of -65 and -66. Symmetrical bridges didn't come on movements this late, though, did they?

 
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There is a so called transitional movement with a symmetrical bridge and stretched adjustment index, but actually only in the 105.012-63. So either the bridge was swapped or, more likely, someone chose to swap the serial bridge. To quote spacefruit: hurdles to do that are technically and moraly very low.