Last summer, while perusing a large carton box full af old sport memorabilia, post cards, newscuts, etc, in Tynemouth antique market, was a day of book fair, I came across a 1958 programme of Billy Smart's Circus in a pretty good condition. Priced £10 I tried to negotiate the price, maybe the vendor noticed the sparkle in my eyes, so I had to pay the asked price!
Can this help?