An interesting point (and I'm wondering where the "Knickerbocker" ID originated?) the Dials are all being redone at International Dial... on the several images sets I have saved (and am now trying to make sure I have 100% straight, on my crystal listings on eBay?) for the Clinton and Knickerbocker models... As Wayne pointed out, the Knicker here doesn't sport the sub second numerals, as the Clinton examples do... HOWEVER, I also now have photos of a CLINTON with no numerals EITHER, recently redone by International, then resold, on eBay... Furthermore, almost NO DIAL from say around 1950 back, hasn't been redone at least once, no matter what the reseller claims! (Just ask any dial refinisher?) So unless one specifies that they want numerals there, then they may not get them? And therefore I'm afraid (although it may well be a simple "ommision" on the part of International, on one dial?) we can't use that detail (just yet) to claim it's a Clinton vs. Knickerbocker hallmark... until we have several (ugly) ORIGINAL dials, to compare and contrast! So for now... the 8AK movement (above) is a 1948+ Knick... and the 1945+ (round) 8AH movement, is the Clinton... Am I right!? :-)
Best :-) William