I have seen many of these 400-600 used Spanish boxlocks, and thats about all they were ever worth.
These seen to all have about the same issues:
The polishing on the barrels was done with about 220 grit and then blued. The checkering looks like it was done by blind monkeys. The barrels are wavy. The chambers can be rough from poor polishing. The wood is, well what can I say. The trigger pulls can be off the map.They are just rough guns. Are there exceptions to the rule, yes. Do they go bang, yes. If all you ever wanted in life was a 500 shotgun, then go for it. (Like the $4000 911 Targa) My grandmother said "I would rather a little of something good that alot of something not so good".
John
Quality Arms
PS: I had a very good friend who passed, he would buy anything if was cheap enough. Anything that I just could not get rid of I would put in a pile and when he came to town, knowing he would buy it if I priced it cheap. I swear that he would buy a tird on a stick if was cheap.