I like the Miller/Howland design selection in the safety slide. For me it is the only possible design that can allow one to actually select when a bird is on the wing. Certainly can't with a Parker Bros., Fox-Kautzky, or a Hunter One Trigger selector.
Harry E. Howland's selective single trigger Patent No. 1,818,852, assigned to Ithaca Gun Co., was filed June 18, 1928, but wasn't granted until August 11, 1931.
From 1926 through the 1931 Ithaca paper the listing is "Selective Single Trigger if wanted $30.00." Beginning in the 1931-32 Ithaca Catalogues the listing is "Ithaca Selective Single Trigger if wanted $30.00." By the second 1932 Ithaca Catalogue (that includes the Magnum-Ten) the listing is "Ithaca Selective Single Trigger if wanted $32.45." By the 1934 Ithaca Catalogue 51-F, they did a drastic price cut on the selective single trigger to $21.60, where it remained through 1940. For 1941, it went up to $21.76, and for 1942 up to $24.55. Just after President Truman "dropped the bomb" the selective single trigger was $25.17. From there the price rose quickly to its last listing at $45 on the 1948 retail price sheet. But, only Field Grades and Grade 2Es were listed on the 1948 Dealers Prices and the only options available for 1948 were a recoil pad and twin ivory sights. "Doubles will be in Field Grade and #2E Grade only. No Higher Grades. 12, 16, and 20 Gauge only."
