This is a picture of a 1951 Raleigh DL-1 I found as part of a set here. The set is very good and really shows off the bike at its best. I was amazed to see how similar the 1951 version is to mine (especially with those Delta Cruisers). The main differences are the rod-actualted stirrup brakes it has rather than the rod-actuated drum brakes mine came with.
Here is my 2009 DL-1 for comparison. It is nice to see that with the DL-1 not a huge amount has changed in 58 years.