This is a silver lens cap for the Leica Q series, an essential item to protect your camera lens. - Brand: Leica Q Series - Color: Silver - Type: Lens Cap Thank you for viewing. This is a new, unused item. I purchased it as a spare and kept it in storage. It was purchased from the Leica official online shop. I bought it to match my Q (typ116) silver, but I am selling it because I switched to a Q2 black. It fit the Q2, so it will probably fit the Q3 as well. I cannot answer regarding the Q3 43 as I do not own one. Thank you. [Additional Note] According to reviews from those who purchased it for the Q3, this product seems to be slightly shallower for the Q3 and is intended for the Q/Q2. I will promptly add information about compatible models once I receive an official response from the manufacturer. [Additional Note 2] According to the manufacturer's response, this product is compatible with all of the Q/Q2/Q3/Q3 43 models, so please consider purchasing it with confidence. Thank you.