Q. I am halachically a lefty, but since there are some sfeikos regarding my status, I put also (tefilin) on my left hand after davening. I always take my shel yad, turn it the other way and put it on. Recently, someone offered me an old pair of ordinary tefillin.they are kosher but not nearly as mehudar as my pair, both batim and parshiyos.should I continue to use my pair and keep turning it around or use the common pair even though it is old and not so mehudar?
A. Horav Shlomo Miller’s Shlit’a opinion is that it is preferable to wear the old pair on the (everyone) left hand properly, than the mehudar upside down.
The Rov added that the tefillin shel-rosh should not be removed when changing the shel-yad. Therefore no brocho should be recited when placing the other non-mehudar shel yad on the other hand. After tying the shel-yad, one should slightly move the shel-rosh.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a