Hey Rod,

Thanks a lot for this information. As you said, the knobs seem to be virtually identical to the Seneca. I did a bit of digging in that direction and discovered the 'Montauk View Improved' that also has similar knobs and hardware to the Seneca. As it turns out, the Seneca, National View (as you mentioned), Ingento, Rexo, and Montauk, all produced virtually IDENTICAL cameras in 5x7. Unfortunately, I haven't been able to find an example of any of those which feature a tripod block nor a block provided as an option in the catalogs. So the search continues. At the very least, this appears to be a step towards figuring this out.

Thanks again for the info.