Pair of Klipsch K-55-V Alnico Magnet serial numbers 16449 & 16450. Measure 10.4 & 10.5 DCR on RadioShack MultiMeter. Atlas Sound manufacturer, original 1 3/8 18 threads, original 2" diaphragms, original spring loaded terminals. They were mounted on K-600 metal horns (1973 Cornwalls), though were utilized with appropriate horns on Heritage Klipschorn's, La Scala's, and Hersey's. No issues, just thinning the herd.
$175 (PayPal net), plus $25 USPS shipping within contiguous 48.