We have constructed a rigorously selected sample of intrinsically similar Seyferts by chosing well-defined Sy 1s and 2s that are matched in several orientation independent optical properties, in addition to redshift. We found a posteriori that the selected Seyferts are also matched in their total radio, mid- and far-IR luminosities. We conclude from our analysis of the VLBI images of these Seyferts that (a) their compact pc-scale radio morphology is consistent with the predictions of the US, (b) they do not show significant evidence for relativistic beaming under certain assumptions (c) at least in some cases the detected pc-scale feature may be the termination point of the jet, and (d) the observed correlation of linear size with luminosity might swamp the predicted systematic difference in projected size between pole-on and edge-on Seyfert structures.
Acknowledgements. Help from the staff of NRAO & EVN and funding from the Indo-Russian ILTP, EC & JIVE are gratefully acknowledged. The VLA & VLBA are run by NRAO, a facility of the NSF, operated under cooperative agreement by AURA, Inc. The EVN is a joint facility of European, Chinese & other radio astronomy institutes funded by their NRCs. This research has made use of NASA-ADS, NED & SIMBAD.