Definitely a sanyo yoke. Odd though, I have a spreadsheet of yokes made by Sanyo just before they clsoed on anything they still had in production and it is not on it.
Best guess, but only a guess is it is a CGA/Standard res tube. If you had an inductance meter we could be certain??
Measure the resistance of the horizontal windings (Red and Blue lead). Resistance is definitely not the best way but in a pinch it may help. By the way when you measure the resistance first measure the resistance between your 2 meter leads and subtract that from the reading you get between the yoke leads.
Rick