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How big is my loss if I mess up this Waltham?


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So one of my goals for 2021 (after loosing all those pounds) is teaching myself how to change a balance staff.

I bought myself a staking set and chose this nice big movement from my old stash as a guinea pig. It's marked 16443683

My question is, I have no clue how much/if this thing is worth and there is a chance that I'll mess it up beyond repair. Does anyone know a ballpark amount this would fetch when working? Is it worth risking this movement?

Thanks

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12 hours ago, Tuvia said:

Thanks all! I guess you're right. I'll practice on a movement without a case and then move on to this once I'm confident enough. 

Found these in the stash, I guess they'll be sacrificing themselves... 

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Did you already look at both Balance Staffs? Are they both broken? ?

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Have you a lathe? Only asking as some staffs are riveted on and the rivet lip needs to be cut off by using a lathe. There are tools out there that will punch the staff out, they do work but can occasionally damage the hole in the balance wheel.

Unless of course they are friction fit staffs then you are home and dry with the staking set mate.

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3 minutes ago, transporter said:

Have you a lathe? Only asking as some staffs are riveted on and the rivet lip needs to be cut off by using a lathe. There are tools out there that will punch the staff out, they do work but can occasionally damage the hole in the balance wheel.

Unless of course they are friction fit staffs then you are home and dry with the staking set mate.

I haven't really examined them up close yet. If it's anything more than a basic swap I think I'll look for a different one. I want to start with the simple (if I am even allowed to call it that) stuff. 

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