Only have a steel rule to hand to measure. Not sure if it's been spread to 126mm and originally 120mm. A 130mm wheel would squeeze in but you'd need the ends properly reset if going that wide. Especially with it having fastback stays and chrome. If using 126mm or 120mm, I'd say the frame would benefit from ends being checked and cold set by LBS once whatever wheel spacing to be used is decided. Be worth making sure they are perfectly parallel.
Knew I'd forget something... Rear spacing is measuring approx. 125mm - 126mm.
Only have a steel rule to hand to measure. Not sure if it's been spread to 126mm and originally 120mm. A 130mm wheel would squeeze in but you'd need the ends properly reset if going that wide. Especially with it having fastback stays and chrome. If using 126mm or 120mm, I'd say the frame would benefit from ends being checked and cold set by LBS once whatever wheel spacing to be used is decided. Be worth making sure they are perfectly parallel.