Lufkin No. 57 Level Vials

View attachment 122094 View attachment 122095 I bought a box of items at an auction and these 4 what I believe are replacement level viles were in it. I was wondering if someone could tell me what they were worth, I need money for a rotory phase converter. I'll probably put them on ebay. I have 4 different sizes .moiunting holes center to center are 4.25",6.875",7.375", and 8.875"
All are marked Lufkin No. 57 Made in USA. Thanks for any help you can give me.