Clear coating being a popular option , I was wondering if there is information on input material and technique involved . I have done auto restorations two decades ago . Materials have improved since then . So are people using standard auto clearcoat or something different ? Are there reasons for differing choices on new run as opposed to NOS playfields ? The " Diamondplate " NOS fields have held up very well , was this a polyurethane product ? Thanks in advance for the reply . Enjoy your day . Shane