Original Sylvania? All other Sylvania bulbs I've bought from a retail store in the exact same packaging had "Sylvania" marked on the bulb indicating the wattage etc. There is NO information stamped on these bulbs. and i found her. burn faster. So you are the judge. But I doubt the authenticity. They work but don't look like the ones you'll find at my local store and don't have the same markings on the lamp.
Lamp LED Yeelight Smart LED Bulb W3 (YLDP005), E27, A60, 8 W, 6500 K
47 Review
Lamp LED Xiaomi Mi Smart LED Bulb Essential (MJDPL01YL), E27, 9 W, 6500 K
113 Review
Ceiling lamp Yeelight YLXD013-B, 50 W, number of lamps: 1 pcs., color: white
62 Review
Lamp LED Xiaomi Mi Smart LED Bulb Warm White (XMBGDP01YLK), E27, 8 W, 2700 K
26 Review