https://www.lighting.philips.com/p/conventional-lamps-and-tubes/incandescent-lamps/standard--t-a-e-shape-/softone-standard-t-shape/LP_CF_ISTSOFE_EU/family
Philips Softone Standard T-shape | ISTSOFE | Philips lighting
T-shaped gas-filled lamps with a modern appearance
t shapephilipssoftonestandardlighting