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mcjp6 · 8 May 2010, 11:36 PM

It is my understanding that the 5513 case is the same through the 30+ years of production.

With the early ones being fitted with the twinlock crown/tube and the later ones fitted with the triplock crown/tube.

No need for any grinding.

8 May 2010, 11:36 PM	#6
mcjp6 "TRF" Member Join Date: Mar 2009 Real Name: Michael Location: VK2 - AUS Watch: 5513s Posts: 7,380	It is my understanding that the 5513 case is the same through the 30+ years of production. With the early ones being fitted with the twinlock crown/tube and the later ones fitted with the triplock crown/tube. No need for any grinding.