Which Snell Type A do I have? A-I or A-Original?


Any Snell afficianados out there? I have owned many pairs of Type As over the years and now have a superb pair. The tweeter, if memory serves, is different than I remember from my first set of Type As, though I am pretty certain they are original. I have read that there may be two early versions, the Type A-I and the Type A-Original. Is this true, and if so what is the difference? My pair is serial  numbers 243/244. Separately fused tweeter/mid/woofer. Ugh this won't allow me to add a picture! Well the round plate surrounding the tweeter is white, and a dispersion bar across it diagonally. There are no felt pads near the tweeters but they may have been removed by previous owner. It does have the insulation pads hanging inside the speaker grilled.

How can I tell which model I have, assuming there really is such thing as a "Type A-Original"?

Thanks for any thoughts!
montaldo
Before the first pair of Type A's arrived at Audiocom in 1977, Del (co-owner) told me "We're getting a new pair of speakers in soon! They're called Snell's and they are the BEST speakers I have ever heard! And they're $1390 a pair!" That was a lot for '77! And three years later when the original pair was to be replaced with an upgraded pair, Bill (co-owner) offered me the first demo pair for $750! I stupidly passed up his generous offer!
That is a great story. The funny irony is maybe 5 years ago I ran my type A speakers with a Conrad Johnson MV-60 amp And premier ten preamp. The sound was amazing. I was a huge fan of cj, but not these days since they moved more toward "neutrality"... ;)

It is funny they didn't like the Snell's. Go figure.
And I just remembered my very first pair of type As was bought used in 1994 from a Chicago dealer for exactly $750 and it happens that I ran them with a Conrad Johnson mv-52!
A friend had the original Type A back in 1978 or ‘79. Shortly after I heard them I bought my pair. They looked identical except my pair had 2 rear cutouts for the woofer. His earlier pair was sealed behind the woofer cabinet. 
Also, his pair had felt or something similar attached to the inside of the grill cloth directly in front of the tweeter. 
Pater Snell made a number of early prototypes, playing with possibilities. I had never heard  of the rear facing woofers!

Yes the little pad hanging from  the grille cloth in front of the tweeter was a production feature to knock back the treble slightly. It appears to be standard house insulation with light fabric sewn around it with black thread. Very homemade looking. But the speakers work like few others I have heard..I just compared head to head my Snell's and some $8k Wilson Benesch that have gorgeous fit/finish, and the Snell's were clearly superior in musicality, realness, meatiness of sound. The Wilsons had more treble energy but not nearly as convincing.