OK, I ordered a replacement buttplate from Sarco for what appears to be a mostly correct May 1943 Smith Corona. Can someone please confirm that this is in fact the correct buttplate, it looks very similar (but a little different?) to the one that's on the rifle.
If it's in fact the correct SC buttplate, what's the best (safest) method of cleaning off the cosmoline (or whatever it is).
Thanks,
Sean