ironically i think you might find the boker asian made slipjoint to have higher consistency than the lower end german made models. relative to the model and price, of course.
i've got lots of bokers, but three boker tree brands, 2 fellows in carbon steel and bone and one copperhead in washboard green bone. none say "made in.....?" anywhere all three say soligen germany at the base of the blade, so i'll assume made in germany, but i don't know that for sure.
all three had issues. the two fellows had cracked bones and one had a largish chip missing near the edge. the other one also wasn't sharp at all. sent them back to Terry, who sent them to germany to get repaired, back in mid september of this year. still haven't seen them show up yet.
the copperhead had one of the pins driven deep into the scales, both sides, or is too short so it's recessed on both sides quite a bit. sorry no pics on hand as i type this, but i could take some. the other pins are okay looking and the only other issue with it was it was labeled as green bone, but one side is grey and the other more of a blue gray. the grey side tends to look a little green in the correct lighting, but they are different colors without a doubt. everything else was good with it.
point being is in three examples all three had issues, that a collector would not be happy with i assume. i'm more of a user, and so deep long cracked seperated bone and missing chunks i couldn't deal with, but the short pin doesn't bug me. so for a user they are a good value, depending on the model. although one could argue easily a case is a better value. for a collector who likes tight fit and finish, i think chances are sooner or later they'll disappoint. mind you these weren't the high dollar models. more of a low to mid range for what i assume is german made stuff.
that said i still like boker and their entire line has allot of nice knives for lots of tastes. so i will keep buying models i like.