Falcon interchangeable cores catalog c606 (6-pin with cover). have 420 all keyed alike and another 90 all keyed alike. both have control and change keys. will sell in groups of 50 @ $7/each or all of one type for $4/each
you can find a cut sheet of the product on page 8 of the following link:
falconlock.com/pdfs/t_series_fa-5161_rev06-07.pdf
willing to ship for additional costs