I got this Hamilton Emerson a few weeks ago at a flea market for $3 but the crystal was bad. So I went on Ebay and searched for a crystal and found a woman selling a plastic one that she claimed to fit this watch. Since she showed the packaging, I tracked one down from a friend and when I tried it, it didn't fit! Good thing I didn't buy hers.
So my next step was to try a different seller. This time the seller was selling a glass crystal. Well I was really tough on him ahead of time making sure I asked the right questions, even letting him know that I had already had bad luck with someone claiming theirs would fit. I specifically asked how he could verify it would fit, and he said he said he thought he tried it in a case, however "it should fit with little or no modifications".
That bothered me because it is not easy to file down glass. Anyway, I got the crystal this week, and it took me 2 hours to file it down to fit! I ended up taking a 16mm band and cut the corners to fit this 14mm case. I think it finally looks right.. I have to admit I did do a good job on the glass crystal, now all I have to do is try not to break it!!!