This mint condition Marexar Squintar angled mirror lens attachment has a 54mm thread. It appears to be unused and it comes in its original box.
Add to Cart Angle Scope Angle Scope Lens Attachment for Lens or Adapter with 53mm Thread V14 $34.99 1 in stock Add to Cart
Add to Cart Konica Konica Metal Lens Hood for 24mm and 28mm Wide Angle Lenses in Case MINT V10 $49.99 1 in stock Add to Cart
Add to Cart Topcon Topcon Close Up Macro Attachment No 2 49mm Vintage Original Box & Case MINT V10 $39.99 1 in stock Add to Cart
Add to Cart Nikon Nikon UW Nikkor 20mm f/2.8 Underwater Wide Angle Lens in Box NEAR MINT V13 $159.99 1 in stock Add to Cart
Add to Cart Topcon Topcon Slide Copying Attachment Vintage in Original Box MINT V16 $69.99 1 in stock Add to Cart