I have two pairs of Rega ELAs that I'm about to put up on eBay. Both are in very good condition and work well and I haven't made any modifications to either pair. I would like to determine whether they're mark 1, mark 1.5, mark 2 or even 2000s but one of them doesn't quite fit the criteria that I was kindly given by Mike Sae (of Pink Fish) for a mark 1.5 or a mark 2. Pair 1: [list] [*]black finish [*]transmission line port at top rear [*]3 spikes on steel base [*]full fluting (grooves) - top to bottom [*]round bass drivers [*]serial numbers 3738 and 3739 [/list] I think that these are mark 1s. Pair 2: [list] [*]black finish [*]transmission line port at top rear [*]3 spikes on steel base [*]half fluting (grooves) - top half only [*]rounded square bass drivers [*]serial numbers 11026 and 11027 [/list] I think that these are either mark 1.5s or mark 2s. Can anyone advise? Thanks.