Vintage Asahi Optical Pentax Camera Accessory Japan SE Focusing Screen

Description

This vintage lens is in excellent overall condition.
** I am unsure of what the exact model number this is, but the small tab on the screen has “C 1” on it. The case has “SE”, but there is no other model numbers or identifiers. **
** I have two of these. The other is in its original box and is labeled an “M.” They both look very similar, so this may be an M focusing screen, but this is not guaranteed. **
Please see photos for all other details. Also, If you have any questions or requests, feel free to send over a message.