Fakes have always been an issue with high collectible firearms. The gun collectors market is filled with them. Look at K98 snipers and all the repro mounts on eBay etc. The new-made Mosin M91/30 PU scopes and mounts. The recent stash release of MOD Lee Enfield parts that have flooded the market over the past few years, NOS stocks, etc... Online sites showing original vs fakes help the forger as much as the collector. It's technical skill/knowledge, training, and experience used in ID'ing stamp quality, fonts and sizes, the finish quality of steel vs wood, oxidation of wood, and metals.
There has always been a strong following of collectors around the world, many rally when fakes show up. Just ask and find out as much info as you can, It's the same with all things you buy.
We all need eyes open. Just a thought.