I presume the previous post meant the NYC jeweler and merchant Baldwin Gardiner
. Like most of his fellows in the day, he retailed silver bought in from several NYC wholesale manufacturers, rather than producing standard goods in shop.
The D/Lion/Bust mark is attributed to an as yet unknown NYC wholesale manufacturer. I have seen scores of good with this mark and the countermark of as many retailers, with quality running from ordinary to top drawer. The last mark (a cartoonish imitation of the English Leopard head hallmark) has been tentatively attributed to the Forbes family group, but without any definitive proof. The fact they are all found together should not be taken as an indication of a single manufacturer, as there are known examples of goods sold from one wholesaler to another to fill in orders with the resulting pieces showing a variety of mark combinations. It's all very convoluted, which should be real surprise given the state of factory production at the time.
The best you can say is that your piece is of better than average quality, made by an unknown NYC wholesale manufacturer, possibly remarked/resold by another, and retailed by an unknown merchant from anywhere along the eastern seaboard.