I have a dozen bikes. Nearly all have leather saddles, most are Brooks, plus I have had & later sold numerous other bikes with used Brooks saddles that had an unknown history. They were all comfortable enough from the first ride & most broke in to a better fit after 300-1,000 miles of riding, but a few had thick, stiff leather which required an extended break in period of 2,000-3,000 miles. One, a green B17 Champion Special, only began to show dimples after 2,000+ miles. I mentioned this to a shop owner I know. He said this was his experience also but he had one B17 that never did get fully broken in, even after many thousands of miles it remained stiff & un-dimpled.

I once found a $10 B17 at a swap meet that had received to much Proofide or other break-in treatment. It was oily, soft, very flexible & sagged badly. I wiped it down with alcohol, tightened it up & laced the sides but it was only comfortable for rides of less than 1/2 hour, so I think its a bad idea to try and hasten the break-in. Don