Rossin Columbus SLX f+f, or not..?

Campag do a lot of drop outs for higher end bikes. Front and rear,
As do Gipemme / Nervex they also make lugs but as far as I know they don't manufacture frames
Frame builders will buy BB's / lugs / dropouts from other manufacturers and put the bits together under their name

Taking this as far as it can go Reynolds / Columbus make the tubing but are not frame manufacturers

This^

Not sure why it has Campag front, and Gipemme rear, drop outs though.