Need advice on Trommel Mag and Loader

[calibrator]

Hello, I need some advice about my next possible purchase. I have the opportunity to purchase a 2nd design TM08, Dust Cover and Loader from a local source. The asking price is lower than I normally see these items priced on Simpsons or the other dealers. I have a return guarantee if not happy. Both the TM08 and Loader are marked B/N. These items look to be in extremely good condition, especially the Loader. The owner (who is very Luger savvy) feels that this Loader was refinished after capture in something called "British Black". I have also read on this forum that some TM08's had their capacity limited for political reasons in certain countries. I also know that Loaders are being reproduced. My question are : (1) Are there benchmarks to determine if a Loader is a repro other than condition and finish i.e. markings or machining features? (2) Are there external clues to tell if a TM08 has been modified for less capacity? (3) What would an EXPERT collector look at initially in my position. THANK YOU for your attention.