If memory serves
Tom Anderson told me they made the change in April 1966. That is why the 35, 36, and 70 could be bought with either the clip on medalion or the sticker depending on when they were made. That is how I know both my 35 & 36 are early models Luckily both my 35 and 36 have a clip on medallion which I think gives the machines a more 50's feel to them. Filtequeen83 does your 35 have the sticker or the clip on medallion.....PAT COFFEY