Missing coinage

I went to go produce gold coins and noticed that I'm missing a coinage. I had two gold coinage and one gold smelter in zone 9 now I have only one smelter and one coinage. What is odd is that where the coinage was between one of the bronze smelters and the hardwood sawmill. I clearly would not "destroy" a gold coinage. I did destory a nearly depleted mine on Tuesday and one on Wednesday. Now I'm beginning to wonder if the other building's workyard display didn't get launched. Oh well. Guess I'll have to build another.