"So Mapman...what do you look for to determine good physical condition?."
Good question. I'll try to relate:
1) obvious scratches or other physical defects like warping or off center cutting (not so much dirt on the surface, which can be removed via cleaning in most cases). Sometimes, what looks like a scratch is only a linear dirt pattern or other surface deposit, which is less audible and can be removed via cleaning if needed. You have to inspect closely in order to determine if it is a scratch that has physically impacted the grooves or not, or to what extent.
2) visible groove modulation/quality (this can be hard to determine reliably with the naked eye, but generally grooves cut with more visible modulation will deliver better dynamics). I will sometimes buy a low cost record in good shape otherwise just for this even if the artist or material is unknown or not relevant to me at the time.
3) sheen/surface texture (specular reflection). Many better sounding records that are not worn tend to reflect light more specularly (like a mirror) than those that are worn, which reflect light more diffusely. If you can detect minute rainbow color patterns in the closer spaced grooves, then that is often an indicator of good groove quality and high frequency modulation that delivers crisp performance at higher frequencies.
Good question. I'll try to relate:
1) obvious scratches or other physical defects like warping or off center cutting (not so much dirt on the surface, which can be removed via cleaning in most cases). Sometimes, what looks like a scratch is only a linear dirt pattern or other surface deposit, which is less audible and can be removed via cleaning if needed. You have to inspect closely in order to determine if it is a scratch that has physically impacted the grooves or not, or to what extent.
2) visible groove modulation/quality (this can be hard to determine reliably with the naked eye, but generally grooves cut with more visible modulation will deliver better dynamics). I will sometimes buy a low cost record in good shape otherwise just for this even if the artist or material is unknown or not relevant to me at the time.
3) sheen/surface texture (specular reflection). Many better sounding records that are not worn tend to reflect light more specularly (like a mirror) than those that are worn, which reflect light more diffusely. If you can detect minute rainbow color patterns in the closer spaced grooves, then that is often an indicator of good groove quality and high frequency modulation that delivers crisp performance at higher frequencies.