Can anyone help me locate this script geographically, historically and linguistically? The Y looks Hebrewish, the E and U are vaguely uncial/lombardic, there is a Phi character, ... It must have been reasonably important for Caslon to include in his specimen, but doesn't fit in with anything that I know in the evolution of the Roman alphabet
The Caslon foundry made a lot of types for scholarly publishing by British universities, which accounts for the numerous historical scripts in their specimens.
Your specimen is a part of the Lord's Prayer, which transcribes (German j instead of English y):
See ‘Incunabula’s recent Twitter thread on the subject.
The specimen shown in Reed’s A History of the Old English Letter Foundries (1887, reprinted 1952) is neater than the OP. Therein lies the difference between Gothic and Gothick?