Based on similar listings, I date this as 1960s, but I do not see any obvious serial number to indicate the age.
The amp was recently serviced and recapped by a local tech. The amp works and sounds great.
The amp has two inputs, and knobs for volume, tone, and tremolo speed (no control for tremolo amplitude). There is also a polarity switch - the amp works in both "on" positions with less hum in the second position.
Not pictured - the original 2 prong plug connected was replaced with a different 2 prong connector.
The original speaker was replaced with a Fender 10J4 speaker. The speaker serial is 10J4-5B 465-510. The 465 indicates this is an Oxford speaker, and the "5" in "510" indicates it is likely 1975. I do not have the original speaker.