The hubs look like Peak 203x40 or 200x50. Difficult to tell from the back. Take another piccy, same as the one with drum on it's own, but the other side (i.e. the outer / front face) and I should be able to tell you. Although Snipe had a tendency to use Knott/Avonride axles. There should be a little plate, riveted to the centre of the axle. If it's a small, oval, green and silver one, it's Peak. Avonride will have "Avonride" on the plate and some i.d. numbers. I may have a pic on my phone.
Out of curiosity - why do you need to i.d. them? Are you just curious, or looking to change them? Just saying, as that one looks like it's in good nick tbh