Possible Clues:

• Spectacles clipped to the nose
• Clip-on eyeglasses
• TR trademark
• Pair of glasses with a nose clip
• Glasses held on by nose clip
• Glasses that clip onto nose without side-pieces
• Seeing helpers without arms holding the bridge
• Aid to look-out on the bridge
• Pair of glasses that clip onto the nose
• Eyeglasses clipped on the nose