Having alighted on Pirastro Perpetuals, I am clearing out my other strings. So I am offering up: Spiro 4/4 Mittels (a put together set in generally good condition bar some rattiness to the peg end silks, notably the D as usual). These are slightly lower tension than regular 3/4 Mittels and seem to be the preferred Spiro in the US, according to TalkBass). £55 inc post. An old school/Blue Note type set comprising Pirastro slap E/A and very old but great condition Red-o-Ray nylon wrapped