The back case has a six digit number - its 135030 TOOL 105 . First I would like to know what the six digit number means and if the tool for opening is still available to purchase . I do not have familiarity with removing this type of back - meaning one that doesn't have an obvious lip to get under and pry up. There is already an obvious scratch on the back that was there prior to me buying the watch. Can anyone suggest a tool for doing this , I mean besides the back case knife . One more thing - does this crown look correct , its silver in color and the watch is obviously gold or gold filled ?
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