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I am working on this thing.  It needs a new hairspring--I am searching.

But what I wanted to mention here refers to the design of this movement.  Notice that one large plate that wraps around one side of the movement.  It is a real bear to get it installed given that one of the wheels is buried underneath and difficult to position while trying to manage the escape wheel.

The later 6/0 Walthams (e.g., the 6/0-D which I have) splits this plate into two pieces.

I am a neophyte and as such, have not seen a vast number of movements.  Maybe stuff like this is common.

2021-04-19 09_59_23-Window.png

2021-04-19 10_07_20-Window.png

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I guess you have attempted to instal the escape wheel when center arbour+ the bridge on it+ balance& cock+ fork cock are installed, before these are installed, you have good access to escape wheel to slide its pivot in, then tighten screws on the large plate/ bridge, next add the said parts on.

Obviously modified escape cock ( split ) must have been thought of after tons of complaimts at assembly line.

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