Serial number or frame number?

Frame numbers on the screwed & glued bracket and Alan, 

food for the other Alan, Turing if he was still alive.

I took some Alan-frames and made pictures of the numbers under the bottom bracket, the rear dropout and, if available, of the date-numbering on the seat tube. When it's not readable anymore I noted a point. 

At first you'll see a picture of the complete frame.

alan competition, first generation, 1972/1973

130287

alan competition, first generation, 1972/1973

S33261

alan competition, second generation, 1973/1974

D47930

alan super record

558861

alan super record, ovalized top tube, january 1983

2.2578

alan183

alan-guerciotti super record cx, ovalized top tube, june 1983

2...21

alan super record cx, ovalized top tube, december 1985

247710

super1285

alan corsa super alu ls, june 1995

265777

695

Far as I see,

there's no correlation between the number under the bracket and the age of the frame,

frame number is not the same as serial number.

But maybe there's someone much smarter than the writer of this.

Until than there's the Classic Alan Guide from Piero Zanini, 

check the web for the latest version.

And of course from the end of 1979 the numbering on the seat tube.

Please note,

this is in English because most people cannot read Dutch.