[Steve]

The end has a small gear that I believe changes moves the minute hand.

 

[Steve]

 

[7s26b]

60E13N or 60E15N

OK, so that's a 4205 diver's crown - which has a double seal ( an extra one inside the crown).
It may well work, but I don't think it's designed to be used with the plastic tube insert ?. I've had a look through some of the watches with the same plastic tube part number and a 6mm crown. The STM005 crown looks like a possibility and is available 1E60D0SNW1- and there are others.

http://service.seiko.com.au/pls/apex/f?p=104:20:3520683964027471:Go:NO:RP::

 

[jringo8769]

no sorry i meant the end of the crown...silly me...thank you again for the great pics

 

[jringo8769]

7s26b..what would you recommend...mine does have that plastic tube insert...

 

[jringo8769]

i want it to be as original as possible....would hate to lose a sale someday if i ever sell it...