[rosewood bridge plate on J200]

I have recently seen two different 50's era J200's with large rosewood bridge plates.  Did Gibson ever use rosewood bridge plates or should I assume that they were both replacements?

[rosewood bridge plate on J200]

I have recently seen two different 50's era J200's with large rosewood bridge plates.  Did Gibson ever use rosewood bridge plates or should I assume both were replacements?