These are five planes that cut hollows, by various makers. The blades are not skew. Plane A appears to be about a #14, with no apparent maker's mark. B is about a number 4 by Moseley & Son, New St Covent Garden, London. C is by Mathieson, Edinburgh, and is stamped number 8 on the toe, though it appears to be more like a 5 or 6 to me. Can't make out the mark on D, a number 4 about. Can't make out the mark on E either. It's a number 4.
