There are three variations listed below, but all variations of this Lamp Assortment have an application guide printed on the inside of the box top. These charts can be used to calculate the year of release. We only know of three different sets at this time, but they could have changed for every year of production. If you have any information about these changes that are not documented here please use the "contact" link at the bottom of this page.
Variation A: Contains 60 individually boxed lamps in a plain RED box. 1949 Production.
Variation B: Contains 66 individually boxed lamps in a plain RED box. 1949 Production.
Variation C: The quantity of lamps was reduced to 60 that were pushed into a hard paper board and the No. 122 was shown on the top of the box. 1950-52 Production.