Tiffany &Co canale sticks

Hello…I have a pair of Tiffany & Co silver soldered twin branch candelabra that are convertable to single candle sticks. They are electroplate and marked with the number 7 at the top, 1854, 150 and the letter W at the bottom. Can someone help me identify the year made? From the style, I’m guessing around 1900? I know that Tiffany began using Tiffany and Co on plate around 1880 and stopped all E.P in 1931. Was hoping to narrow that down to a single year.