I've weighed a lugged BB shell (28.6 ST, 31.7 DT) at 160g, OS lug set (28.6 TT, 28.6 ST, 31.7 DT, 31.7 HT) at 190g, and rear vertical dropouts at 100g, for a total of 450g, or almost exactly one pound. That weight will be pretty consistent regardless of frame size.

My 61cm 953 frame weighs 1650g without the BB cups and head tube bearing cups, so if the BB shell, lugs, and rear dropouts total 450g, all of the tubes total 1200g (~2.65 lbs).

The density of 953 and EL-OS is virtually the same (~8 grams per cubic centimeter), so with the slightly thinner 953 walls (0.5/0.3/0.5 TT, 0.6/0.4/0.6 DT) compared to EL-OS (0.7/0.4/0.7 TT, 0.7/0.4/0.7 DT) the 953 tubes will be slightly lighter than the EL-OS tubes, but the OP's frame is 56cm compared to my 61cm. I'd expect his frame to weigh about the same as mine, possibly a skoshi bit more.