The 3rd shave with his new Derby blade was vergood.I was suprized as I bought this blade on a whim as virtually nothing is on the web about this new Derby blade.I purchased 100 Derby USTA from Splitseven on Ebay who was great to buy from and quickly shaved when these arrived.Wow what a treat as this new blade is sharper ....slightly smoother ..and longer lasting than a Derby Premium.I shave every 2 days moderately heavy beard use the cube-Paa preshave and quality shaving soap....B&M...Siliski.....A&E.....and this trial. was done on a Aristocrat 1947 ...Flair.....Superspeed...next will be a F eather.The seller told me the Derby Premiums are being discontinued sp this might be Derbys new blade.I have used alot of blades and this new blade will hold its own with any I've used.YMMV but I was impressed with its performance.Its very thin ...no printing on the blade and next use will be in my PAA slant to see how this very thin ..sharp ..smooth blade shaves in that.For $10 fo 100 a fair price.This. blade is a like a Polsilver ...Rapira Lux...Dorco Prime..Derby Premium all in one...A Solid Buy!