I have about 100 50 ohm SMA loads that were used by Motorola on a Nextel receiver multi-coupler. They were used to terminate unused ports on the multi-coupler. A test with a network analyzer shows that they are comparable to the load supplied with the Nanovna I purchased from R&L.
I really do not have the time or ambition to sell them individually, but maybe someone would be interested in them all. Offers?
Private email to k1ike at snet dot net
73, Joe, K1ike