New, starting in 1967:
35 Summicron v.1, 90 Tele-Elmarit, 28 Summicron, 35 Summilux Asph, 50 Apo Summicron, 70 Summarit-S, 100 Summicron-S, M8, M9, M240, S2
Used:
M2, M8, 21 Elmarit Asph, 35 Summarit-S
Obviously I've not avoided buying new, but often at special pricing like this year's 12% currency exchange benefit, same in a previous year buying from UK, "demo" pricing, new-old-stock, etc.