Gene, Rick, and All,
Thanks for the great information, but it's still 100% clear to me. Probably my original question wasn't detailed enough.
Based on Stroebel's book, the Savage No. 18 and No. 19 were Lyman Combination Tang Sights - Second Variation (No locking lever.) The third variation of the Lyman Combination Tang Sight with the locking lever was patented July 25, 1905. Gene, if it's not too much trouble, can you tell from the catalogs you cited when the change over occurred from no locking lever to locking lever?
In looking at Stroebel's again I came across the following, "In 1909 Savage went to a new system that incorporated the original maker's model number in its model designation."
I kind of suspected that the 29 1/2 and 30 1/2 were introduced some time in the 19 teens, but it is nice to have that confirmed.
Thanks again,
Jack
