miriam, Is that Elna beige or gray? I'd say beige from the pic. If it is, it was made between 1959 and 1963. The grays were made in 63 and 64. It's a very nice looking machine. If it's half the machine my 1974 SU is, then you won't be disappointed. Mine is actually more beat up looking than yours, but it's done a lot in its years.
Mornigstar, My 1952 128 has a large hole just to the right of the spool spindle. My book says it is an oil hole. I would guessed from the size that it was a grease port, but apparently not.