Hello, I’m new and wondering where you could get some couplers for narrow gauge/mining railroad besides bachmann, lgb, etc?
Link and pin type couplers would be common on old narrow gauge mine trains.
Ozark Miniatures has a good selection of link and pin coupler pockets. Many here make there own too. I use them for my 7/8n2 trains (1:13.7 scale two foot narrow gauge on G 45 mm track).

On 1/24 scale trains -


-Brian