There is a gentleman in India that monitors the astromart. His students make mirrors and I believe sell some of them to keep the hobby or education going. I believe if you found the right wording and placed a free ad there, you might just make contact. At the moment I cannot recall his name or email address I will try to go through some of my old email backups this weekend. If it came down to it I would melt bottle glass into blanks and grind my own. A mirror resilvering shop can coat the mirrors and since they are small you could get by with an over-coat of thinned shellac. I read where one S. Afrikanner did just that.

Good Luck,
-Rick