Oscar Adler baritone sax info

I found an Oscar Adler baritone sax, very old, rough shape but intriguing find. This horn has minimua keys, different let design and other odd aspects. I know there is little or no value but I think I will add it to my collection. Is there any way to guess the model, year or any info? Has the round small.stamped logo, serial number is 1715.
Thanks in advance for any help!

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