I recently serviced this beautiful 1944 Omega calibre 30T2 for a ClockSavant customer. The 30T2 is an iconic calibre for Omega and heralded its future as a top manufacturer of high quality wristwatches. There were many variants of the 30T2, this particular watch is the 30T2 SC Rg. To simplify movement naming and variants, Omega later renamed the variants with numbers such as 280, 281, and so forth. Returning to this watch, the previous scoundrel who worked on it must have whacked the hairspring and replaced it with one from another watch. The watch of course wouldn't run accurately without more work, It would have been running about 300 seconds fast a day once they had their way with it. Rather than perform the tedious work of adjusting the balance to match the hairspring, they poured oil and grease all around the movement to slow the watch down. They succeeded to some degree, but did so by taking the watch to its knees and rendering it unstable. I wanted to point-out one other aspect of the 30T2 variants which is their differing balance cock/regulator designs. The one on this watch was for high accuracy and quite innovative. The particular one used on this watch is sometimes damaged/destroyed/hacked away by people working on the watches who do not understand the design of the regulator and overall balance cock. Fortunately this watch did not suffer that fate. During full servicing I addressed the balance, several other items, and it is now running nicely again and is a beautiful watch that reflects the distinguished style, elegance, and grace of the 1940's.