WTB or WTT for Leupold Mark 4 16X Scope

[kft101]

Looking for a 1990s Leupold Mark 4 Mk4 M1 16X scope. Like this one: https://www.gunbroker.com/item/926014305

Can buy outright or trade for a Mark 4 M3 3.5-10X scope.

Thanks!