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A nice find, and I would say it gives credence that it was in fact manufactured by Trenery.

Interesting Maladroit, possibly not unusual for a Sheffield razor of that era to be marketed under another manufacturers name. Then again I wouldn't be surprised to see a few come out of a "nuts and...

If it is a wedge there is usually enough meat to get them back up and shaving, although you may lose a bit of width going by the pitting close to the edge. Have seen worse.