I picked up a 16lb Columbia 300 Yellow Dot (the OLD burgundy plastic one) at the pro shop...NEW and um-drilled. Getting it drilled with grips and a thumb slug for $55. John, the owner, thought he might sell it to someone as a spare ball when he found it in his basement, but I am having it drilled 3/4 finger - 3/4 positive side to use on the Sahara Desert that is my home house during the winter. Plus it is will just be fun to throw a NEW "vintage" ball when it is needed...and will always be a good 10 pin ball if all else fails.
Sorry, felt I had to share, as it is just cool to me to be stepping back in time to what I tossed as a 14lb all those years ago. Man, I am getting old. He also found me a PINK HAMMER, that I will pick up in the next few weeks...and as much as it would have been fun, I had to pass on the LT51 and LT48!? LOL...
Good luck and good bowling all!!!