I am convinced that everything that was ever made, or ever will be made, will get reproduced. Such is life.
I try and stay on top of these, as if I don't, I could get taken by a sharp dealer. Case in point- shu-mine boxes. I just noticed IMA is making them. They are simple to make, and there's probably no real way to tell them apart. I've owned about 3 of them over the years - Stupidly traded off all but one.
I am sure they will start turning up on ebay soon with the right fuse. While at IMA I also saw they are making copies of the somewhat rare WW1 era US Cavalry bandoleer. Thankfully, that copy is decent enough for a reenactor, but I don't think would fool anyone with any experience. Not that it will keep someone from aging and finding one 'at a barn sale.' And now an even better copy is being made by WPG. 103635000
I will keep saying to my dying day that the only responsible thing is to mark stuff as reproduction in a reasonable way (inside pocket, etc.) but it'll never happen. Things I buy as a reproduction I mark myself. Which means in the future that when my estate gets sold off it will be worth more. On one hand because I am a famous author and historian (I have had people actually say they want to buy an item that was used in one of my books), and on the other hand because my reputation will help reassure people they are getting real stuff.
This has nothing to do with greed on my part, but a sense of pride in my collection.
And after all, a true collector takes pride in his work!