Great blast from the past, when we had real numbers and real button copy with real names for the Southland freeways. Gorgeous!
Rick
The amusing aspect of that particular sign:
The patched greenout, NOT the original sign, had the freeway name on it! (Albeit, the original sign did not have any button copy, while the patch with the I-5 Golden State Freeway text did)
I do recall seeing some 1950s Golden State Freeway/US 6/US 99 signs existing prior to the designation of I-5, in fact the example below from the AARoads Shield Gallery is about 1 mile south of the currently revealed 99 sign! (This one I think is specifically at the junction of the Golden State Freeway with the old Colorado Street Freeway adjacent to Glendale, the very next exit after the 134/5 junction in the recent photos - that freeway spur still exists to this day, too)
https://www.aaroads.com/shields/show.php?image=CA19550061