https://www.christies.com.cn/lot/lo...e-18k-gold-5993009/?intObjectID=5993009&lid=4 this is beautiful and different with other 13zn gold case . The lug is small but looks good . I can’t see any other same reference, the watch is amazing with the two tone dial . Small longines long and thin blued hands . does any expert with more details about 5090 ?