Philips SL*9 CFL with black base, early rare example of original CFL or energy saver design dating back to early 1980s, later lamps had a white base Stock Photo - Alamy
Philips SL*18 Prismatic Compact Fluorescent Lamp
Philips SL*18
PHILIPS SUPER ENERGY SAVERS SL*18=75 WATT - NOS | eBay
Philips SL*18 Demonstration Lamp
Lighting-Gallery.net - Compact Fluorescent Lamps CFL/Philips SL*18. 18W 900 Lumen. 220V 50 Hz. 1992. Made in Poland.