Hey guys, my Grandfather passed years ago and i always held on to this Bulova he used to wear. I bought a cheap 18mm leather band for it and i would like to replace the battery and clean it up a bit. My question is, is it possible to buff out the scratches on the (plastic?) crystal ? If so what would i expect to pay to buff the crystal and replace the battery at a watchmaker ? Never done it before. I was going to polish the steel case on my own.