Re: K28 Trust Plates

I've been researching the detail changes on the individual 470s. Based on my research so far, here are the date ranges where the trust plates were removed:

470: 9/40 - 8/41
471: 8/40 - 6/41
472: 7/40 - 7/41
473: 8/40 - 3/41
474: 9/40 - 1/46
475: 3/41 - 6/41
476: 6/40 - 7/41
477: 8/40 - 6/41
478: 7/41 - 6/42
479: 7/39 - 5/40

Dates with links are the latest date I can find with the lienholder plate installed ("ON") or the earliest date I can find with the lienholder plate removed ("OFF"). Dates that don't have a link is based on a photo in a book.

Number 474 has such a wide range because I don't have as many photos of her.

I welcome additions, corrections and commentary.