Offered is a pair of 2 1/2 inch speakers removed from some old wire recorders. The speakers are both type 76-PO-18.  One is a Rola Perm-O-Flux type and the other has a source code 449, corresponding to Wilder Mfg. Chicago. The speakers are very similar. Each has mounting holes at 2 7/8 inches measured diagonally across the diameter. DMM impedances are 3.4 and 3.6 ohms. Both steel frames are clean and in good condition. The Rola magnet assembly is a little smaller than the other one. The paper cone on the ROLA is in good condition. The Wilder paper cone has been repaired.  Both speakers are in working condition, they make pops and noises when battery-tested. Pick up these small speakers for use in your own DIY flea-power system for tweeters.  From tube gear-these are efficient speakers. Mouse all over the photo images to zoom in.