I'm definitely not an expert, let's get that out there. And I'm also not trying to argue, just shooting the shit here.
But I had a few thoughts and thought it might be pertinent to bring them up. First, that thing is TIG welded. TIG wasn't something your average guy had access to when that springer was built. Per Irish Rich Ryan, "Dick got tired of breaking extended H-D springers and Indian girders, so he built his own springer to Dick Allen specifications. Solid 4130 chrome moly legs and related components, all TIG (called heliarc back then) welded."
Second, the cross brace on the front end is maybe a little off dimensionally, but were Dick's all the same size? I mentally kinda ruled out Sugar Bear because all of his I've seen have been domed, but these are flat, like some of Dick's.
This is supposedly a DA springer:
That spring rest/top tree looks similar to my eye in terms of thickness. But look at the lower spring rest, I don't even think it's round. Also, the springs are wide-set like Bruce's, even though normally Dick's springs were kissin' cousins.
And then there's this:
http://4.bp.blogspot.com/_7d3SInnj2hw/SXUwujXiXxI/AAAAAAAAAUs/1T9a3qE-2o8/s1600-h/joe_hurst2.jpg
Note the flat ends on the lower spring mount. (Thanks in advance again to member and all-around awesome guy Irish Rich; I believe those photos came from his blog.) It's on Joe Hurst's "Hustler."
And here's White Bear. Doesn't look too far off to me, but I might be blind.
http://1.bp.blogspot.com/_7d3SInnj2hw/SXUtfPAVbYI/AAAAAAAAAUk/J3KDmBAv5Kg/s1600-h/joe_hurst3.jpg
But the mount is thicker here. And clearly fabricated. But he didn't always do things that way, apparently. From Irish Rich, "...for every springer Dick built, he used a Harley springer along with it. Dick used the spring perches, springs, rods, and ball sockets from the OEM originals, along with the lower rocker shackle pins and hardware."
Clearly that changed at some point.
Allen's springers are interesting because they varied a lot, at least from what I've seen. His style progressed, he made things differently. It wasn't like AEE, say, who made just a lot of different items. I think Dick learned things and made things better and differently as he learned them. His changed more over the years probably than any other ones out there.
If you open up Bruce's first photo there, you can see the tips of the springer legs. Those look like some of the early Allen stuff I've seen, but later ones used a much prettier socketed fitting on the ends. The tips aren't long like Sugar Bear's were, which made me lean more towards a Dick Allen.
The fact the rockers were missing also sort of made me think it was DA/or Sugar Bear; I don't think those guys made their rockers readily available. They were the secret sauce to the whole springer workin' so well!
I'm not saying I'm right or wrong; mostly just tossing out some of the things I was looking at and thinking about when I mentioned what I said. To Mike's point, there were all these SoCal springer shops and a guy working at one might be at a new place two weeks later, doing things a little differently.
There are enough differences he pointed out that that might be a really nice homemade one, or maybe someone was copping Allen's style in a competing shop, or maybe none of those things.
Another point to Mikey's argument that it's not Dick's is the general construction. Dick built shit fucking heavy. Not ugly or like he didn't care, he just built shit to last... probably what most of us would call overbuilding. Bruce's springer is not what I would call overbuilt.
I just wanted to provide a little background on some of the things I think about when looking these over, and why IDing these things ranges from ("real fuckin' easy" to "could be anything." I also went through this when a buddy built a bike around what we believed was a legit DA springer, but Dick's work exhibited so much variation over the years it's hard to know what is what.
