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Note the double level brake bridge
.2x Wing bridge.jpg (24219 bytes)

 

"Ditchex" is a grooved top tube in which the rear brake4 cable is submerged.
 Ditchex.jpg (24550 bytes)

 

head.jpg (38539 bytes)

 

Zunow's own cast bottom bracket shell.
 Horn bbkt.jpg (25370 bytes)

 

The "Horn" bottom bracket shell &  seat tube, which is enlarged at its lower end.
 Horn pipe.jpg (23168 bytes)