Paracrine signaling produces molecules of a local regulator. Synaptic signaling produces neurotransmitters. Paracrine signaling affects all cells in the vicinity of the transmitting cell. Synaptic signaling affect a single target cell.
Sterling Jewelers, Inc. is an American specialty jewelry company headquartered in Akron, Ohio. The company was founded in 1910 by Henry Shaw (the father of Jerry Shaw, the chairman emeritus of Sterling today), from LeRoy's Jewelers in Lorain, Ohio.
STER indicates that silver sterling. The PPC may be trademarks of jewelry. The little green concern, however. This could use a piece of silver-copper (for the base) with entries on practically disappeared. The best place to raise a jeweler to confirm is silver. Whether it's style, it is difficult to evaluate online.