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Dunno if it takes a standard SE or a specialty blade...take a look at this and see if it's worth looking into to see if you can use this modification to fit into the Wosty:

YouTube - how to modify...

Didn't know Wosty made a single-blade safety. Looks like an early lather catcher c.1897-1905. The neat thing about this is that the attachment shown attaches to the handle after you unscrew the...