Musical Instrument Accessories
Ilford 12 multigrade filters, 8.9 x 8.9 cm
Set of 12 Multigrade Frameless Filter for Amplifier Numbered from 00 to 5 in half grade steps For all grades of contrast
https://www.bizrate.co.uk/musicalinstrumentaccessories/ilford-12-multigrade-filters-8-9-oid1664073408.html
