Advice on choosing speaker cables for vintage Altec Model 19 speakers

I have the voice of theater driven with 30 watt tube amp.used 12 gauge ofc wire from parts express and made own bananna from Amazon not cardas.they didn't have 100k cables in the 50 's. New crossovers better money spent better yet put a sublime accoustic electronic crossover on it,fantastic. Enjoy the retro.mine was used by Elvis talks to me through my voice of theater.he has not left the building.that should get the party going or is there a difference in wire capacitance and induction and dialectric?

There are no right or wrong speaker cables if they’re made of wire capable of handling the current. There is no objective difference but to humour your train of thought, you should find speaker cables from the same era for the best synergy. 

When I used to sell those beauties, back in the late 70's, they were wired with 18 gauge lamp cord through a multi-speaker switch box and still sounded great. I would consider 16 or 14 gauge OFC cable from Monoprice, depending on the length of the run. 

I took a deep dive into some posts and one wire that keeps coming up is Duelund Coherent Audio DCA16GA cable which based on the old tinned copper cable (with oiled cotton to reduce oxidation)produced by Western Electric. Do any of you know about this one?  

Belsen 9497 is Werner’s recommendation. I bought his crossovers for my alter 604’s in custom 620 cabinets a couple of years ago. They sound fantastic.