Kowa TSN-4 77mm straight spotter with upgraded TE-9Z 20-60 zoom eyepiece & case. Premium spotter with fluorite glass. Near-mint condition, I bought it out of Japan to rob the 20x eyepiece, never had it in the field. $500 shipped. Sale Pending
Kowa does not have a serial number lookup, but Paul at Kowa North America might know. 90’s or early 00’s would be my guess. This was the predecessor to the 774, although the 774 did not get fluorite crystal, you had to bump up to the 884 to get it. I’ve had it on the tripod, it’s significantly better than my 554 and 664.