I had a similar misfortune with my Mercian recently (following a crash with another cyclist), it's as subtle as on this Roberts, except visible on both the DT and TT.
I rode the bike without noticing anything for couple of weeks after the crash, it was definitely rideable.
I wouldn't personally buy and ride that Roberts without fixing it straight away, so I hope you can get it for really really cheap...
I had a similar misfortune with my Mercian recently (following a crash with another cyclist), it's as subtle as on this Roberts, except visible on both the DT and TT.
I rode the bike without noticing anything for couple of weeks after the crash, it was definitely rideable.
I wouldn't personally buy and ride that Roberts without fixing it straight away, so I hope you can get it for really really cheap...