Hi there! I recently purchased a lovely 18kt solid gold Constellation, which came with a solid gold buckle. Unfortunately, the buckle turned out to be pink gold, while the watch is yellow gold. I will therefore let the buckle go, in search for a yellow gold one instead, but in doing so, I will need to be sure that it actually is solid gold and which carat. The problem is, that I am guessing it is a non-swiss produced as the markings clearly isn't english or french. I would greatly appreciate any knowledge on a buckle of this type. I have attached a couple of photos, but if more photos are necessary, please let me know!