Vintage 14k G Cameo, Silver BO Pendant/Pin x 2 - Total Set of 3 Pieces

This is a lot of 3 Cameos 1) Small cameo w/ sliver plate and silver plate chain. I cannot find a mark so I believe it is silver plate. 2) Larger Cameo which can be worn as a pendant or a pin. It is clearly marked BO or B0 on back which tells me this one is Sterling Silver based on information I found when researched. 3) Small 14K Gold, clearly marked, pendant cameo with filigree gold surround. Only 1 cameo has a chain. There are no visible flaws with all 3. They all could use a clean/shine but other than that, they are in excellent vintage condition. See pics for sizes of each cameo. The 2 smaller ones are essentially the same size. The detail on the larger pin/pendant is stunning in the detail. The smaller cameo with the 14K gold surround is almost as beautifully detailed. All 3 are very very pretty