My mother in law has kept a Biba crop top from the 60s or possibly 70s. It’s black jersey tie on with the gold Biba logo on the bust. A few years ago I sold an Ozzie Clark for Radley dress she had on eBay, and I was contacted afterwards by someone who missed it to say it went for a ridiculously low price. Think it was about £250. I googled it and the same one is in the V&A collection! I don’t want to make a mistake with this. Any advice welcome.