Although I don't believe they are Lew Horton guns I have a couple 629-4 Back Packer guns, one NIB w/papers. They have BRU serial numbers about 100 apart.
I'd understood they were only made one year and had some collector interest. Is that the case or just nice 3 inch 629s? What would they normally sell for?

I really enjoy the one I shoot and carry and bought it's mate a year later from the same shop more as a spare than anything.