Just received an old A ride from the 60's in the mail today. The seller, an orchestral drummer, advertised it on his own site and Facebook as a 24, and for very cheap so I bought it.
Laid a tape measure across, lo and behold it's a 26! Wobbly, too. Gonna play it at a jam tonight and see how it sounds, it's in nice condition with a thick crusty patina.