This is a Rega RB-250 tonearm. The tonearm has NAD logo on it, at one point NAD was buying from Rega the RB-250 arm for their use. This is a genuine Rega arm, and there are no deference except the NAD logo.
The item is in mint condition, it was never installed or used, I had it for many years and I end up never using it. At one point for many years I was NAD dealer and I bought the tonearm from the company as spare arm for the NAD turntables.
I guaranty the tonearm as a perfect working condition. Shipping in continental USA will be flat rate of $24.50.