Mamiya Auto Extension Rings ZE Macro lens

A Mamiya Auto Extension Rings ZE set

Mamiya E No.1 ( 144101 )
Mamiya E No.2 ( 144102 )
Mamiya E No.3 ( 144103 )

for all Mamiya-Sekor E lenses

you place the extension rings between the camera and a standard lens, for example a 50mm F/2. The standard lens then gains extensive macro capabilities because the minimum focusing distance is greatly reduced

the extension rings are in very good condition

with Mamiya rear cap and box