That would be a 9375 1050. If it is a non HP and unmolested, you are in luck. It is the best out of the box 1050 Holley made, the middle/intermediate air bleeds should be open, no brass inserts. Jet it 92 square to start, go up from there. If it slows MPH go back down.
If it is a newer HP 9375, start with 86 square. Be aware that the internal metering is not as good as the older Dominator, and needs a little more work to make it behave. Too much emulsion, and way rich down in the low and mid ranges. If you find it loading up in the burnout and cruising, go up on the intermediate air bleeds. You will probably even be able to remove them, just watch the plugs and jet up as needed.
If someone has worked on it, no way to know what's best without looking at all the passages and doing a little measuring.