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And while there is not a direct replacement that would be compatible from a different manufacturer we would suggest that you take a strong look at the Bobrick 352-100 Lock and Key As seen here:
I do want to thank you for your sizable order earlier today and wanted to create a specific video analyzing the dimensional differences between these two locks so that you can determine more firmly whether or not you believe this will work.
This video that I've mentioned can be reviewed here:
If you would like for us to enter and ship an order for you for one of the Barbara clocks to confirm compatibility into the ASI manufactured product, don't hesitate and feel free to reach out to us we will happily Supply that to you.