The cranks certainly appear to be the Sugino RD Messengers, but I can't seem to find any definitive information. If so, this seems to be quite the deal, which would be a huge boon to someone on a tighter budget a la me. Thoughts? If I didn't go with these I would probably end up with the Eighth Inch Crankset.
EAI Bare Knuckle / Leader 725 / 1975 Raleigh Professional Track
I'm 99.99999% certain that Sugino doesn't sell unbranded stuff. The only way to tell for sure is by looking at the backs of the arms. They're most likely Driveline cranks - same as Pake, EigthInch, etc, etc.