The panes on this lantern are a modern compromise, being flakes of mica embedded in a resin material. The original lanterns most likely had thin panes of horn for panes. Every horn worker that I have talked to says that it would be difficult and expensive to reproduce the horn panes. It is a very labor intensive process and would probably triple the price of the lantern. There is a source for horn panes made from water buffalo horn, but in my opinion they are too dark to be useful.
This lantern is painted with black oil paint to try to approximate a period oil finish. I do not know if the original Victory lanterns were painted or japanned.
This lantern is fitted for a candle, though the originals may have been whale oil lanterns.
The next step is to talk to the living history people and see what they think of this design. This lantern is the same size as the originals, 21" tall by 7.5" in diameter. We might need to compromise a little to make it a little easier to pack to events. In the meantime I will be putting the current version in my store on this site.