Looking at the right hand pic, I have been told the two pipes on the left are old Mac's pipes. Also was told the no. 5 & no. 6 from the left are old Rossi pipes. I believe that info to be correct. Both the old Mac's and both the old Rossi pipes are "straight through". There are baffles/plates visable, but all the holes line up straight through the pipe.

The no. 3, no. 4, and no.7 & no. 8 are unknown; they are larger dia. than the other pipes and somewhat heavier than I think they should be. Still would like to know what they are. These are not "straight through" designs.......