I can't recommend any place to you, but your question comes up every now and then, so maybe there is an answer in this link from a search I did from this forum. https://www.beeradvocate.com/community/search/33645504/?q=custom&o=date&c[title_only]=1&c[node]=42
My recommendation would depend on number of glasses you're looking to do. If a small quantity I'd suggest a local engraver. Most major glass decorators don't get into anything less than 48-72 pieces.
