I still run a 1989 Regency Turboscan in the livingroom. It doesn't track trunks but I put in the S.F freqs and it scans them so rapidly that I can follow stuff pretty well. It still runs!
I have four Early to Mid-1970's vintage Regency Scanners that I bought new at the time. All still work and all but the "Whamo" Model use crystals. Their model numbers are listed below with my "Antiques" listings.