Smena-SL identical to Smena-Rapid camera with a frame finder and accessory shoe. Not as rare as Rapid camera.
Produced: 1968-1977
Name: „Смена-SL“
Producer: LOMO
Lens: Triplet-43 4/40
Quantity: 597.935 units (both with Smena-Rapid). (sovietcams.com)