Has most of the aspects of a Rambow:
Titlist butt points
Green speck linen wrap
Thin wall brass joint and pin
Large ivory rounded butt plate, no bumper, recessed screw.
Having said that, there is one thing not consistent with most Rambows I've seen, and that is the joint screw. It protrudes out further from the joint from most Rambows, but I still think it's a Rambow. He may not have always been exact with the joint screw placement, or there could have been a repair done at some point. Nice cue!